{"product_id":"kiehls-powerful-strength-vitamin-c-face-serum-12-5-l-ascorbic-acid-lightweight-hydrating-serum-with-hyaluronic-acid","title":"Kiehl's Powerful-Strength Vitamin C Face Serum 12.5% L-Ascorbic Acid — Lightweight Hydrating Serum with Hyaluronic Acid","description":"\u003cp\u003e\u003cstrong\u003eKiehl's Powerful-Strength Vitamin C Face Serum is a lightweight daily serum formulated with 12.5% pure Vitamin C (L‑Ascorbic Acid) and hyaluronic acid to help improve skin texture and boost radiance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis serum blends a concentrated, stabilized form of Vitamin C with humectant hyaluronic acid in a lightweight base designed for everyday use. Clinical testing from the brand reports improvements in skin texture and radiance, and visible smoothing of fine lines and deeper wrinkles over multi‑week use. The formula aims to combine antioxidant benefits with hydration to leave skin visibly brighter and more even in appearance.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly can I expect to see results?\u003c\/h3\u003e\n\u003cp\u003eAccording to Kiehl's clinical data, changes in skin texture and radiance were measured early, with more noticeable smoothing over several weeks of consistent use. Individual results vary by skin type and routine consistency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClinical study timeframe: improvements recorded across 2–8 weeks.\u003c\/li\u003e\n  \u003cli\u003eBest results with twice‑daily application after cleansing and toning.\u003c\/li\u003e\n  \u003cli\u003eCombine with sunscreen in the morning for broad protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this serum suitable for sensitive or all skin types?\u003c\/h3\u003e\n\u003cp\u003eThe formula is presented as suitable for all skin types, including sensitive skin, thanks to a stabilized Vitamin C delivery and a lightweight, non‑heavy base. If you have very reactive skin, patch testing before widespread use is recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContains 12.5% pure L‑Ascorbic Acid, formulated for stability.\u003c\/li\u003e\n  \u003cli\u003eHyaluronic acid provides hydration without heaviness.\u003c\/li\u003e\n  \u003cli\u003eDo a patch test and introduce gradually if you have sensitivity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I incorporate this into my skincare routine?\u003c\/h3\u003e\n\u003cp\u003eUse the serum morning and night after cleansing and toning and before applying moisturizer. A small, measured amount (brand recommends two pumps) spread evenly over the face avoids the eye area.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply after cleansing and toning; avoid the immediate eye area.\u003c\/li\u003e\n  \u003cli\u003eUse morning and evening for consistent benefit; follow with moisturizer.\u003c\/li\u003e\n  \u003cli\u003eAlways apply sunscreen during daytime when using antioxidant serums.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes this Vitamin C formula different from others?\u003c\/h3\u003e\n\u003cp\u003eKiehl's highlights a patented, highly stable Vitamin C formulation designed to deliver an efficacious concentration while maintaining suitability for sensitive skin types. The combination with hyaluronic acid targets both antioxidant protection and hydration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUses pure L‑Ascorbic Acid (Vitamin C) at a clinically relevant concentration.\u003c\/li\u003e\n  \u003cli\u003eStability and patenting aim to preserve potency over time.\u003c\/li\u003e\n  \u003cli\u003ePaired hyaluronic acid helps skin feel smoother and more hydrated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This serum is aimed at anyone looking to brighten dull skin, improve texture, and address signs of aging like fine lines and wrinkles while maintaining hydration. It's appropriate for users who prefer a lightweight, easily layered serum in their AM and PM routines, including those seeking a Vitamin C product formulated with clinical testing and stabilized ingredients. If you have very reactive skin, consult a dermatologist or perform a patch test before regular use.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003ePropylene Glycol, Dimethicone, Glycerin, Ascorbic Acid, Ethylhexyl Palmitate, Cetyl PEG\/PPG-10\/1 Dimethicone, Dimethicone Crosspolymer, Ascorbyl Glucoside, Cyclohexasiloxane, Hydroxyethylpiperazine Ethane Sulfonic Acid, Lauroyl Lysine, Acrylonitrile\/Methyl Methacrylate\/Vinylidene Chloride Copolymer, Polysilicone-11, Adenosine, Hydrolyzed Hyaluronic Acid, Limonene, Isobutane, Citrus Aurantium Dulcis (Orange) Peel Oil, Citrus Limon Peel Oil\/Lemon Peel Oil, Citral, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate.\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 often should I use Kiehl's Powerful-Strength Vitamin C Serum?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use it morning and night after cleansing and toning, then follow with moisturizer; apply sunscreen during daytime.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can sensitive skin use this Vitamin C serum?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The formula is designed for all skin types, but patch testing and gradual introduction are advised for very sensitive skin.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Kiehl's","offers":[{"title":"Default Title","offer_id":53429116043611,"sku":"B079X3RX47","price":143.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/9860\/9243\/files\/kiehls-vitamin-c-front-packaging.jpg?v=1782233089","url":"https:\/\/remediesbeauty.co.uk\/products\/kiehls-powerful-strength-vitamin-c-face-serum-12-5-l-ascorbic-acid-lightweight-hydrating-serum-with-hyaluronic-acid","provider":"REMEDIESBEAUTY","version":"1.0","type":"link"}