{"product_id":"arencia-vitamin-c-booster-shot-serum-for-dark-spots-30-ml","title":"Vitamin C Booster Shot Serum For Dark Spots - 30 ml","description":"\u003c!-- ============================================================\n     KATESAY  \/  ARENCIA VITAMIN C BOOSTER SHOT\n     Shopify product description block - fully self-contained\n     Paste into: Product \u003e Description \u003e \"\u003c\u003e\" (Show HTML) view\n     No JavaScript. All CSS scoped to .ks-vc so it cannot leak\n     into your theme.\n     Replace every  IMG-REPLACE  with your own Shopify file URL.\n     ============================================================ --\u003e\n\u003cstyle\u003e\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Schibsted+Grotesk:wght@400;500;600;700\u0026family=Newsreader:opsz,wght@6..72,300;6..72,400;6..72,500\u0026display=swap');\n\n.ks-vc{\n  --ink:#1C2024;\n  --body:#4C545B;\n  --mute:#8A9299;\n  --line:#DFE3E1;\n  --surface:#F2F5F3;\n  --gold:#B98F2A;\n  --gold-soft:#F6EBCE;\n  --rust:#A85C2B;\n  --rust-soft:#F1E0D2;\n  --white:#FFFFFF;\n\n  --f-disp:'Schibsted Grotesk',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;\n  --f-read:'Newsreader',Georgia,'Times New Roman',serif;\n\n  max-width:860px;\n  margin:0 auto;\n  padding:0;\n  color:var(--body);\n  font-family:var(--f-disp);\n  font-size:16px;\n  line-height:1.62;\n  -webkit-font-smoothing:antialiased;\n  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.kicker{font-size:12.5px;font-weight:600;letter-spacing:0.06em;color:var(--mute);margin-bottom:16px;}\n\n\/* ---------- 1. proof strip ---------- *\/\n.ks-vc .strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}\n.ks-vc .strip div{background:var(--white);padding:20px 14px;text-align:center;}\n.ks-vc .strip b{display:block;font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-0.02em;line-height:1.1;}\n.ks-vc .strip span{display:block;font-size:12px;color:var(--mute);margin-top:5px;line-height:1.35;}\n\n\/* ---------- 2. the oxidation moment ---------- *\/\n.ks-vc .vials{display:grid;grid-template-columns:1fr 1fr;gap:0;margin:34px 0 8px;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--white);}\n.ks-vc .vial{padding:26px 18px 22px;text-align:center;}\n.ks-vc .vial + .vial{border-left:1px solid var(--line);}\n.ks-vc .vial svg{margin:0 auto 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.warn{margin-top:20px;border-left:2px solid var(--gold);padding:4px 0 4px 16px;font-size:14.5px;line-height:1.6;}\n\n\/* ---------- 8. comparison table ---------- *\/\n.ks-vc .tblwrap{margin-top:26px;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--white);}\n.ks-vc table{width:100%;border-collapse:collapse;font-size:14px;}\n.ks-vc th,.ks-vc td{padding:14px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.45;}\n.ks-vc thead th{font-size:12.5px;font-weight:600;color:var(--mute);background:var(--surface);letter-spacing:0.03em;}\n.ks-vc tbody tr:last-child td{border-bottom:none;}\n.ks-vc td:first-child{color:var(--ink);font-weight:500;width:33%;}\n.ks-vc td.ours{color:var(--ink);font-weight:500;background:#FCFAF4;}\n\n\/* ---------- 9. trust ---------- *\/\n.ks-vc .trust{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid 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FAQ ---------- *\/\n.ks-vc details{border-bottom:1px solid var(--line);}\n.ks-vc details:first-of-type{border-top:1px solid var(--line);}\n.ks-vc summary{cursor:pointer;list-style:none;padding:19px 34px 19px 0;position:relative;font-size:16px;font-weight:500;color:var(--ink);line-height:1.4;}\n.ks-vc summary::-webkit-details-marker{display:none;}\n.ks-vc summary::after{content:\"+\";position:absolute;right:4px;top:17px;font-size:20px;font-weight:400;color:var(--mute);line-height:1;}\n.ks-vc details[open] summary::after{content:\"–\";}\n.ks-vc details[open] summary{padding-bottom:6px;}\n.ks-vc .ans{padding:0 8px 20px 0;font-size:15px;line-height:1.62;}\n.ks-vc .ans p{margin-bottom:0.8em;}\n.ks-vc summary:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:3px;}\n\n\/* ---------- 11. close ---------- *\/\n.ks-vc .close{text-align:center;padding:56px 24px;}\n.ks-vc .close .big{font-family:var(--f-read);font-size:26px;line-height:1.42;font-weight:300;color:var(--ink);max-width:520px;margin:0 auto 22px;}\n.ks-vc .seals{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:26px;}\n.ks-vc .seals span{font-size:12px;color:var(--body);border:1px solid var(--line);border-radius:100px;padding:7px 14px;background:var(--white);}\n.ks-vc .legal{font-size:12px;line-height:1.55;color:var(--mute);margin-top:30px;max-width:600px;margin-left:auto;margin-right:auto;}\n\n\/* ---------- media ---------- *\/\n.ks-vc figure{margin:26px 0 0;}\n.ks-vc figcaption{font-size:12.5px;color:var(--mute);margin-top:9px;line-height:1.5;}\n\n\/* ---------- mobile ---------- *\/\n@media (max-width:640px){\n  .ks-vc{font-size:15.5px;}\n  .ks-vc .sec{padding:38px 18px;}\n  .ks-vc .h2{font-size:24px;}\n  .ks-vc .lede{font-size:17px;}\n  .ks-vc .strip{grid-template-columns:1fr;}\n  .ks-vc .strip div{padding:15px 14px;display:flex;align-items:baseline;justify-content:center;gap:8px;}\n  .ks-vc .strip b{font-size:17px;}\n  .ks-vc .strip span{margin-top:0;}\n  .ks-vc .vials{grid-template-columns:1fr;}\n  .ks-vc .vial + .vial{border-left:none;border-top:1px solid var(--line);}\n  .ks-vc .act{grid-template-columns:1fr;gap:8px;}\n  .ks-vc .fit{grid-template-columns:1fr;}\n  .ks-vc .fit \u003e div + div{border-left:none;border-top:1px solid var(--line);}\n  .ks-vc .routine{grid-template-columns:1fr;gap:14px;}\n  .ks-vc .trust{grid-template-columns:1fr;}\n  .ks-vc .trust \u003e div:nth-child(odd){border-right:none;}\n  .ks-vc .trust \u003e div{border-bottom:1px solid rgba(255,255,255,0.16);}\n  .ks-vc .trust \u003e div:last-child{border-bottom:none;}\n  .ks-vc .stat b{font-size:52px;}\n  .ks-vc .close .big{font-size:21px;}\n  .ks-vc th,.ks-vc td{padding:12px 10px;font-size:13.5px;}\n  .ks-vc td:first-child{width:38%;}\n}\n@media (prefers-reduced-motion:reduce){\n  .ks-vc *{transition:none !important;animation:none !important;}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"ks-vc\"\u003e\n\u003c!-- ==================== 1. PROOF STRIP ==================== --\u003e\n\u003cdiv class=\"strip\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e50,000 ppm\u003c\/b\u003e\u003cspan\u003estable Vitamin C\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e2 weeks\u003c\/b\u003e\u003cspan\u003eto first visible change\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFace + under-eye\u003c\/b\u003e\u003cspan\u003eone serum, both areas\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 2. THE PROBLEM + OXIDATION ==================== --\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003ch2 class=\"h2\"\u003eYour last Vitamin C serum didn't fail you. It expired in your bathroom.\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eOpen the last Vitamin C serum you bought. If the liquid has gone from clear to orange, or orange to brown, it stopped working weeks ago - and you kept applying it anyway.\u003c\/p\u003e\n\u003cp\u003eAlmost every affordable Vitamin C serum sold in India is built on L-Ascorbic Acid. It is a genuinely effective molecule, and a chemically fragile one. Air, light and heat break it down. In a Delhi summer or a Mumbai monsoon, a bottle sitting on your shelf can start browning within weeks of opening.\u003c\/p\u003e\n\u003cp\u003eOnce it browns, it is oxidised. It is no longer doing the work you bought it for. And most people never realise, because they assume the colour change is normal and blame their skin instead of the bottle.\u003c\/p\u003e\n\u003cdiv class=\"vials\" role=\"group\"\u003e\n\u003cdiv class=\"vial\"\u003e\n\u003csvg width=\"62\" height=\"112\" viewbox=\"0 0 62 112\"\u003e\n        \u003crect x=\"22\" y=\"2\" width=\"18\" height=\"15\" rx=\"2\" fill=\"#C9CFCC\"\u003e\u003c\/rect\u003e\n        \u003crect x=\"26\" y=\"15\" width=\"10\" height=\"8\" fill=\"#C9CFCC\"\u003e\u003c\/rect\u003e\n        \u003cpath d=\"M12 30a10 10 0 0 1 10-10h18a10 10 0 0 1 10 10v70a10 10 0 0 1-10 10H22a10 10 0 0 1-10-10z\" fill=\"#FBFAF8\" stroke=\"#DFE3E1\" stroke-width=\"1.5\"\u003e\u003c\/path\u003e\n        \u003cpath d=\"M12 46h38v54a10 10 0 0 1-10 10H22a10 10 0 0 1-10-10z\" fill=\"#A85C2B\" opacity=\"0.82\"\u003e\u003c\/path\u003e\n      \u003c\/svg\u003e \u003cspan class=\"tag tag--bad\"\u003eWeek 6, L-Ascorbic Acid\u003c\/span\u003e\n\u003ch4\u003eOxidised\u003c\/h4\u003e\n\u003cp\u003eBrown, slightly sour, and inactive. Applying it does nothing for pigmentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vial\"\u003e\n\u003csvg width=\"62\" height=\"112\" viewbox=\"0 0 62 112\"\u003e\n        \u003crect x=\"22\" y=\"2\" width=\"18\" height=\"15\" rx=\"2\" fill=\"#C9CFCC\"\u003e\u003c\/rect\u003e\n        \u003crect x=\"26\" y=\"15\" width=\"10\" height=\"8\" fill=\"#C9CFCC\"\u003e\u003c\/rect\u003e\n        \u003cpath d=\"M12 30a10 10 0 0 1 10-10h18a10 10 0 0 1 10 10v70a10 10 0 0 1-10 10H22a10 10 0 0 1-10-10z\" fill=\"#FBFAF8\" stroke=\"#DFE3E1\" stroke-width=\"1.5\"\u003e\u003c\/path\u003e\n        \u003cpath d=\"M12 46h38v54a10 10 0 0 1-10 10H22a10 10 0 0 1-10-10z\" fill=\"#E8CE7E\" opacity=\"0.9\"\u003e\u003c\/path\u003e\n      \u003c\/svg\u003e \u003cspan class=\"tag tag--good\"\u003eWeek 6, Booster Shot\u003c\/span\u003e\n\u003ch4\u003eStill active\u003c\/h4\u003e\n\u003cp\u003e3-O-Ethyl Ascorbic Acid holds its structure through the life of the bottle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"caption\"\u003eIllustration of typical oxidation behaviour. Individual bottles vary with storage, packaging and climate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 3. THE MECHANISM ==================== --\u003e\n\u003cdiv class=\"sec sec--tint\"\u003e\n\u003cp class=\"kicker\"\u003eWhy this one holds\u003c\/p\u003e\n\u003ch2 class=\"h2\"\u003eTwo forms of Vitamin C, doing two different jobs\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eArencia builds this serum on a dual Vitamin C complex instead of a single molecule. One form is chosen for stability. The other is chosen for speed. You get the immediate brightening effect and the long, slow fade of dark spots from the same bottle.\u003c\/p\u003e\n\u003cdiv class=\"act\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"name\"\u003e3-O-Ethyl Ascorbic Acid\u003c\/div\u003e\n\u003cdiv class=\"dose\"\u003e50,000 ppm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eA Vitamin C derivative built for stability. It resists oxidation, stays potent through the bottle, and converts to active Vitamin C in the skin. It is also far gentler than pure L-Ascorbic Acid, which needs a low pH and commonly stings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"act\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"name\"\u003ePure Vitamin C\u003c\/div\u003e\n\u003cdiv class=\"dose\"\u003eImmediate action\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eWorks from the first application on dullness and surface radiance, while the derivative handles the slower work underneath.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"act\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"name\"\u003eGlutathione\u003c\/div\u003e\n\u003cdiv class=\"dose\"\u003eMelanin pathway\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eAn antioxidant that interrupts melanin production upstream, rather than only working on pigment that has already surfaced. Applied topically here, alongside Vitamin C, which is how the two are usually studied together.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"act\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"name\"\u003eNiacinamide\u003c\/div\u003e\n\u003cdiv class=\"dose\"\u003eTone and barrier\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eSlows the transfer of pigment into the upper layers of skin, refines the look of pores, and supports the barrier so daily use stays comfortable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"act\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"name\"\u003ePanthenol + Allantoin\u003c\/div\u003e\n\u003cdiv class=\"dose\"\u003eTolerance\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe reason this can be used daily by people who could never tolerate a high-strength Vitamin C. They calm and hydrate, keeping the formula from feeling tight or reactive.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"act\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"name\"\u003eVitamin E\u003c\/div\u003e\n\u003cdiv class=\"dose\"\u003eAntioxidant support\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eWorks with Vitamin C to defend against the daily pollution and UV exposure that drives new pigmentation in the first place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- IMG-REPLACE: ingredient \/ texture macro shot, 1200x900 --\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 4. CLINICAL ==================== --\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cp class=\"kicker\"\u003eBrand-conducted consumer study\u003c\/p\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003cb\u003e-13.44%\u003c\/b\u003e \u003cspan\u003emeasured improvement in the appearance of dark spots after two weeks of use\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 26px;\"\u003eWe are quoting that number exactly as Arencia reports it, and we are not rounding it up. Two weeks is early. Thirteen percent is real but modest. What it tells you is that the formula starts moving in a fortnight - not that your pigmentation disappears in one.\u003c\/p\u003e\n\u003cp\u003ePigmentation that took two years to build does not clear in fourteen days. Anyone promising you that is selling you a story. The honest timeline is below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 5. TIMELINE ==================== --\u003e\n\u003cdiv class=\"sec sec--tint\"\u003e\n\u003ch2 class=\"h2\"\u003eWhat actually happens, week by week\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eRead this before you buy. If this pace is not what you want, this is not your serum.\u003c\/p\u003e\n\u003cdiv class=\"tl\"\u003e\n\u003cdiv class=\"tl-row\"\u003e\n\u003cdiv class=\"tl-when\"\u003eDays 1-7\u003c\/div\u003e\n\u003cdiv class=\"tl-what\"\u003e\n\u003ch4\u003eNothing dramatic, and that is correct\u003c\/h4\u003e\n\u003cp\u003eSkin looks a little fresher after application. Use every other day this week so your skin adjusts. A very slight warmth on application is normal. Stinging is not - if that happens, stop and patch test again.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tl-row\"\u003e\n\u003cdiv class=\"tl-when\"\u003eWeek 2\u003c\/div\u003e\n\u003cdiv class=\"tl-what\"\u003e\n\u003ch4\u003eDullness lifts first\u003c\/h4\u003e\n\u003cp\u003eThe overall grey, tired cast is usually the first thing to go. Makeup starts sitting better. This is where the brand's two-week measurement sits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tl-row\"\u003e\n\u003cdiv class=\"tl-when\"\u003eWeeks 3-4\u003c\/div\u003e\n\u003cdiv class=\"tl-what\"\u003e\n\u003ch4\u003eFresh marks start softening\u003c\/h4\u003e\n\u003cp\u003eRecent post-acne marks, the brown ones from the last month or two, begin to blur at the edges. Older, deeper pigmentation has not moved yet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tl-row\"\u003e\n\u003cdiv class=\"tl-when\"\u003eWeeks 6-8\u003c\/div\u003e\n\u003cdiv class=\"tl-what\"\u003e\n\u003ch4\u003eTone starts evening out\u003c\/h4\u003e\n\u003cp\u003eThe difference between your clear skin and your marked skin narrows. This is the point most people notice in photographs before they notice in the mirror. Take a photo on day one in daylight so you have something to compare against.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tl-row\"\u003e\n\u003cdiv class=\"tl-when\"\u003eWeek 12\u003c\/div\u003e\n\u003cdiv class=\"tl-what\"\u003e\n\u003ch4\u003eWhere stubborn pigmentation moves\u003c\/h4\u003e\n\u003cp\u003eSun-driven pigmentation and older marks work on a three-month clock. One 30 ml bottle lasts roughly six to eight weeks at daily use, so a full course is two bottles. Plan for that from the start rather than stopping halfway and concluding it did not work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003eSunscreen is not optional with this. Vitamin C fades existing pigment; UV creates new pigment faster than any serum can clear it. Without daily SPF you are refilling the bucket you are trying to empty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 6. FIT \/ NOT FIT ==================== --\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003ch2 class=\"h2\"\u003eHonestly, who this is for\u003c\/h2\u003e\n\u003cdiv class=\"fit\"\u003e\n\u003cdiv\u003e\n\u003ch4\u003eBuy this if\u003c\/h4\u003e\n\u003cul class=\"yes\"\u003e\n\u003cli\u003eYou have post-acne marks, tanning or uneven patches, not active cystic acne\u003c\/li\u003e\n\u003cli\u003eYour previous Vitamin C serum turned orange or brown before you finished it\u003c\/li\u003e\n\u003cli\u003ePure Vitamin C has stung, flushed or peeled your skin in the past\u003c\/li\u003e\n\u003cli\u003eYou want one product for face, under-eye and spot use rather than three\u003c\/li\u003e\n\u003cli\u003eYou are willing to give it eight to twelve weeks and wear sunscreen daily\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4\u003eSkip this if\u003c\/h4\u003e\n\u003cul class=\"no\"\u003e\n\u003cli\u003eYou are looking for results in a week\u003c\/li\u003e\n\u003cli\u003eYou already use a prescription retinoid or hydroquinone - talk to your dermatologist about layering before adding this\u003c\/li\u003e\n\u003cli\u003eYour main concern is active breakouts rather than the marks they leave\u003c\/li\u003e\n\u003cli\u003eYou will not use sunscreen\u003c\/li\u003e\n\u003cli\u003eYou have highly reactive or compromised skin and have not patch tested\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 7. HOW TO USE ==================== --\u003e\n\u003cdiv class=\"sec sec--tint\"\u003e\n\u003ch2 class=\"h2\"\u003eHow to use it\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eA few drops. Clean, dry skin. That is most of it.\u003c\/p\u003e\n\u003cdiv class=\"routine\"\u003e\n\u003cdiv\u003e\n\u003ch4\u003eMorning\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eCleanse and pat dry completely. Vitamin C works best on dry skin, not damp.\u003c\/li\u003e\n\u003cli\u003eTwo to three drops. Press into the face, avoiding the immediate eyelid.\u003c\/li\u003e\n\u003cli\u003eWait sixty seconds.\u003c\/li\u003e\n\u003cli\u003eMoisturiser.\u003c\/li\u003e\n\u003cli\u003eSunscreen, SPF 30 or higher. Every day, including indoors near windows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4\u003eNight\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eOptional if you already use it in the morning.\u003c\/li\u003e\n\u003cli\u003eApply a thin layer over the whole face, or only on darker areas as a spot treatment.\u003c\/li\u003e\n\u003cli\u003eOne drop patted gently under the eyes for dark circles.\u003c\/li\u003e\n\u003cli\u003eFollow with moisturiser.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cstrong\u003eFirst two weeks:\u003c\/strong\u003e use it every alternate day, not daily. Building tolerance slowly is the single biggest predictor of whether people stick with a Vitamin C serum. Do not layer it in the same routine step as retinol, AHAs or BHAs - alternate nights instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 8. VS TYPICAL SERUMS ==================== --\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cp class=\"kicker\"\u003eCategory comparison\u003c\/p\u003e\n\u003ch2 class=\"h2\"\u003eWhy this costs more than the serum at the chemist\u003c\/h2\u003e\n\u003cdiv class=\"tblwrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e \u003c\/th\u003e\n\u003cth scope=\"col\"\u003eTypical mass-market Vitamin C\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eArencia Booster Shot\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eActive form\u003c\/td\u003e\n\u003ctd\u003eSingle molecule, usually L-Ascorbic Acid\u003c\/td\u003e\n\u003ctd class=\"ours\"\u003eDual complex: 3-O-Ethyl Ascorbic Acid at 50,000 ppm plus pure Vitamin C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStability in Indian heat\u003c\/td\u003e\n\u003ctd\u003eOxidises quickly once opened; colour shift is common\u003c\/td\u003e\n\u003ctd class=\"ours\"\u003eDerivative is oxidation-resistant through the bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical sting\u003c\/td\u003e\n\u003ctd\u003eCommon, because low pH is required for the acid to work\u003c\/td\u003e\n\u003ctd class=\"ours\"\u003eFormulated at a skin-comfortable pH with panthenol and allantoin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupporting actives\u003c\/td\u003e\n\u003ctd\u003eUsually one, often niacinamide alone\u003c\/td\u003e\n\u003ctd class=\"ours\"\u003eGlutathione, niacinamide, Vitamin E, panthenol, allantoin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnder-eye use\u003c\/td\u003e\n\u003ctd\u003eGenerally not advised\u003c\/td\u003e\n\u003ctd class=\"ours\"\u003eFormulated for face and eye area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003ctd class=\"ours\"\u003eFormulated and manufactured in South Korea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 22px;\"\u003eA cheaper serum is not a worse purchase if it works. The question is whether the bottle you bought is still active at week six. This one is built so that it is.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 9. AUTHENTICITY \/ TRUST ==================== --\u003e\u003c!-- ==================== 10. FAQ ==================== --\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003ch2 class=\"h2\"\u003eQuestions people ask before ordering\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill it sting? I've reacted badly to Vitamin C before.\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eMost likely not, and that is the main reason this formula exists. Pure L-Ascorbic Acid needs a pH below about 3.5 to stay active, and that acidity is what causes the burn people describe. 3-O-Ethyl Ascorbic Acid works at a far gentler pH, and panthenol and allantoin are in the formula specifically to keep it comfortable.\u003c\/p\u003e\n\u003cp\u003eA mild warmth for a few seconds on application is normal. Sharp stinging, redness that lasts, or itching is not. Patch test behind the ear or on the inner forearm for two nights before you put it on your face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs 30 ml enough? It looks small for the price.\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eTwo to three drops covers the whole face. At daily use, a 30 ml bottle runs about six to eight weeks. At the alternate-day schedule we recommend for the first fortnight, longer.\u003c\/p\u003e\n\u003cp\u003eCompare it on cost per day rather than cost per bottle. And note that a larger bottle of an unstable Vitamin C is not better value if half of it has oxidised before you reach it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this with niacinamide, retinol or salicylic acid?\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eNiacinamide is already in this formula, so you do not need a separate one in the same routine.\u003c\/p\u003e\n\u003cp\u003eRetinol, retinal, glycolic, lactic and salicylic acid should be on alternate nights, not layered in the same routine. The old warning that Vitamin C and niacinamide cannot be combined has been largely set aside by formulators, but stacking multiple strong actives in one sitting is still how people wreck their barrier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this work on melasma?\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eMelasma is a medical condition, not a cosmetic one, and it needs a dermatologist. Vitamin C and glutathione are frequently used as supportive care alongside prescription treatment, but no over-the-counter serum, including this one, treats melasma on its own. Please see a doctor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs it safe during pregnancy or breastfeeding?\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eTopical Vitamin C is generally considered low-risk, and this formula contains no retinoids. That said, we are not doctors and will not pretend to be. Show the ingredient list to your gynaecologist and follow their answer, not ours.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it go under my eyes?\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eYes. Arencia formulates it for face and eye area, and it is one of the few Vitamin C serums that does. Use a single drop, tap it gently along the orbital bone, and keep it off the lash line and lid margin.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eThe serum has changed colour slightly. Is it spoiled?\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eA very slight variation in the pale tone between batches comes from the natural gardenia extract in the formula and is not a defect. What you should not see is a shift to deep orange or brown. If you do, stop using it and contact us with a photo.\u003c\/p\u003e\n\u003cp\u003eStore it away from direct sunlight and out of the bathroom shelf if your bathroom gets hot and steamy. A cupboard or drawer is better.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo you ship cash on delivery? How fast?\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eYes, COD is available across serviceable pin codes. Orders placed before 2 PM dispatch the same working day. Metro delivery is typically 2 to 4 days, rest of India 4 to 7. You get a tracking link by SMS and email the moment it leaves our facility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat if it doesn't work for me?\u003c\/summary\u003e\n\u003cdiv class=\"ans\"\u003e\n\u003cp\u003eSealed, unopened units can be returned within 7 days of delivery. Damaged, wrong or missing items are replaced or refunded on receipt of an unboxing photo.\u003c\/p\u003e\n\u003cp\u003eOpened skincare cannot be resold and is not returnable - that is a hygiene rule, not a technicality. Which is exactly why we have written an honest timeline above instead of promising you a two-week miracle. If the pace described there is not what you are looking for, we would genuinely rather you did not order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 11. INGREDIENTS + SPEC ==================== --\u003e\n\u003cdiv class=\"sec sec--tint\"\u003e\n\u003cp class=\"kicker\"\u003eFull disclosure\u003c\/p\u003e\n\u003ch2 class=\"h2\"\u003eSpecification\u003c\/h2\u003e\n\u003cdiv class=\"tblwrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eArencia Vitamin C Booster Shot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet volume\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e30 ml \/ 1.01 fl oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey actives\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e3-O-Ethyl Ascorbic Acid (50,000 ppm), pure Vitamin C, glutathione, niacinamide, Vitamin E, panthenol, allantoin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eLightweight dropper serum, fragrance-free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable for\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eAll skin types including sensitive. Face and eye area.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree from\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eParabens, sulphates, mineral oil, phthalates. Not tested on animals.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of origin\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eRepublic of Korea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eMinustory Co. Ltd. for Arencia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShelf life\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eSee batch code on carton. Use within 6 months of opening.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eCool, dry place away from direct sunlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 20px; font-size: 13.5px; color: var(--mute); line-height: 1.6;\"\u003eFull INCI list is printed on the carton and unit. If you have a known allergy, message us before ordering and we will send you a photograph of the complete ingredient list from current stock.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ==================== 12. CLOSE ==================== --\u003e\n\u003cdiv class=\"close\"\u003e\n\u003cp class=\"big\"\u003eMost people don't have a Vitamin C problem. They have a bottle that quietly stopped working, and eight weeks of use they never got credit for.\u003c\/p\u003e\n\u003cdiv class=\"seals\"\u003e\n\u003cspan\u003eSealed Korean stock\u003c\/span\u003e \u003cspan\u003eCOD available\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp class=\"legal\"\u003eCosmetic product for external use only. Descriptions refer to the appearance of skin and are based on the known properties of individual ingredients; they are not medical claims and this product is not intended to diagnose, treat or cure any condition. Results vary between individuals. Patch test before first use. Discontinue if irritation occurs. Keep out of reach of children.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ============ END KATESAY ARENCIA VITAMIN C BLOCK ============ --\u003e","brand":"Katesay","offers":[{"title":"Default Title","offer_id":49190656802916,"sku":null,"price":1499.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/1911\/9460\/files\/Untitled-1.jpg?v=1788890828","url":"https:\/\/www.katesay.com\/products\/arencia-vitamin-c-booster-shot-serum-for-dark-spots-30-ml","provider":"Katesay","version":"1.0","type":"link"}