{"product_id":"goop-20-vitamin-c-brightening-serum-1-fl-oz-powder-activated-l-ascorbic-acid-hydrating-fast-absorbing","title":"goop 20% Vitamin C Brightening Serum 1 fl oz — Powder‑Activated L‑Ascorbic Acid, Hydrating \u0026 Fast‑Absorbing","description":"\u003cp\u003e\u003cstrong\u003egoop Beauty 20% Vitamin C + Advanced Brightening Serum is a powder-activated, high-concentration L-ascorbic acid serum designed to brighten, hydrate, and help improve skin tone and texture.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis daily brightening serum blends a potent 20% L-ascorbic acid dose with ferulic acid, hyaluronic acid, and ectoin to deliver antioxidants and hydration in a lightweight, fast-absorbing formula. The product arrives in two parts: a stable amber bottle of L-ascorbic acid powder plus a liquid activator to mix immediately before first use, limiting oxidation and preserving efficacy.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the powder-activated system work and why does it matter?\u003c\/h3\u003e\n\u003cp\u003eThe two-part design keeps L-ascorbic acid stable until activation, helping the vitamin C remain potent when you use it. You pour the liquid activator into the amber bottle with the powder and shake; the amber glass helps minimize light exposure after activation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e20% pure L-ascorbic acid powder activated with a liquid for freshness\u003c\/li\u003e\n  \u003cli\u003eAmber glass bottle reduces UV exposure to protect the mixed serum\u003c\/li\u003e\n  \u003cli\u003eShake to combine; ready to apply morning and night\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat skin benefits can I expect from this serum?\u003c\/h3\u003e\n\u003cp\u003eThis formula combines antioxidant support with hydration and barrier protection to address dullness, uneven tone, and the appearance of texture. While results vary, clinical measurements in a small study reported improved radiance after regular twice-daily use over several weeks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAntioxidant blend: L-ascorbic acid and ferulic acid for free-radical defense\u003c\/li\u003e\n  \u003cli\u003eHydration: hyaluronic acid helps skin feel plumper and smoother\u003c\/li\u003e\n  \u003cli\u003eBarrier support: ectoin helps retain moisture and soothe skin\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the serum heavy or suitable under makeup?\u003c\/h3\u003e\n\u003cp\u003eThe texture is water-light and designed to absorb quickly without tackiness, making it easy to layer under moisturizers and sunscreen. A few drops spread across face and neck, leaving a smooth base for subsequent products.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWeightless finish—no greasy residue\u003c\/li\u003e\n  \u003cli\u003eFast absorption enables easy layering with other products\u003c\/li\u003e\n  \u003cli\u003eRecommended application: a few drops to face and neck, morning and night\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use and store the activated serum safely?\u003c\/h3\u003e\n\u003cp\u003eActivate the powder with the included liquid activator right before first use, then store the amber bottle in a cool, dry place away from direct sunlight. Apply sunscreen during daytime use to protect skin after applying antioxidant treatments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCombine activator into powder bottle and shake to mix\u003c\/li\u003e\n  \u003cli\u003eStore amber bottle upright, away from heat and direct light\u003c\/li\u003e\n  \u003cli\u003eUse morning and night; follow with moisturizer and daytime SPF\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This serum is aimed at anyone seeking a high-strength vitamin C treatment to address dullness, uneven tone, and visible texture while also wanting hydrating and barrier-supporting ingredients. It suits people comfortable with a powder-activation step and those who prefer fast-absorbing, non-greasy serums; if you have very sensitive skin, patch testing before full-face use is recommended.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e20% L-ascorbic acid (pure vitamin C)\u003c\/li\u003e\n  \u003cli\u003eAntioxidant ferulic acid plus hydrating hyaluronic acid\u003c\/li\u003e\n  \u003cli\u003eEctoin for barrier support and moisture retention\u003c\/li\u003e\n  \u003cli\u003eLightweight, non-tacky texture; amber glass to limit UV exposure\u003c\/li\u003e\n  \u003cli\u003eClinical improvement in radiance reported after regular use in a small study\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eAQUA\/WATER\/EAU, ASCORBIC ACID, GLYCERIN, DIMETHYL ISOSORBIDE, PENTYLENE GLYCOL, ECTOIN, PROPANEDIOL, FERULIC ACID, SODIUM HYALURONATE, TERMINALIA FERDINANDIANA (KAKADU PLUM) FRUIT EXTRACT, GALACTOARABINAN, SODIUM CITRATE, ZIZIPHUS JUJUBA (JUJUBE) SEED EXTRACT, FRUCTAN, ETHYLHEXYLGLYCERIN, POTASSIUM SORBATE, DECYL GLUCOSIDE, OLEA EUROPAEA (OLIVE) LEAF EXTRACT, SODIUM HYDROXIDE, CITRIC ACID, PHENETHYL ALCOHOL, XYLITOL, CAPRYLIC ACID, CAPRYLYL GLYCOL.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I activate the serum?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Pour the included liquid activator into the amber bottle with the L-ascorbic acid powder, shake until mixed, then apply a few drops to face and neck.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this serum every day?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—use morning and night as tolerated; always follow daytime application with sunscreen for added protection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"goop","offers":[{"title":"Default Title","offer_id":53428331938139,"sku":"B0GWFRF3X6","price":138.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/9860\/9243\/files\/goop-beauty-front-packaging.jpg?v=1782224881","url":"https:\/\/remediesbeauty.co.uk\/products\/goop-20-vitamin-c-brightening-serum-1-fl-oz-powder-activated-l-ascorbic-acid-hydrating-fast-absorbing","provider":"REMEDIESBEAUTY","version":"1.0","type":"link"}