{"product_id":"kiehls-powerful-strength-vitamin-c-face-serum-12-5-vitamin-c-with-hyaluronic-acid-for-brighter-smoother-skin","title":"Kiehl's Powerful-Strength Vitamin C Face Serum — 12.5% Vitamin C with Hyaluronic Acid for Brighter, Smoother Skin","description":"\u003cb\u003eKiehl's Powerful-Strength Vitamin C Face Serum is a lightweight, fast-absorbing serum with 12.5% pure vitamin C and hyaluronic acid designed to brighten skin, refine texture, and reduce the look of fine lines.\u003c\/b\u003e\n\n\u003cp\u003eThis daily serum combines a stabilized form of L-ascorbic acid (vitamin C) with hyaluronic acid to deliver antioxidant benefits and visible smoothing. The formula is created to be effective yet suitable for a wide range of skin types, including those sensitive to stronger treatments. Clinical testing reported improvements in radiance and texture within weeks when used consistently as part of a morning and evening routine.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will I see brighter, smoother skin?\u003c\/h3\u003e\n\u003cp\u003eResults vary by individual, but clinical testing indicates visible changes over a short timeframe. Users often notice immediate improvements in surface texture and radiance, with measurable reduction in fine lines in about two weeks and further improvement in deeper lines after continued use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVisible texture and glow improvement reported immediately after first uses\u003c\/li\u003e\n  \u003cli\u003eFine lines reduced in approximately two weeks with twice-daily application\u003c\/li\u003e\n  \u003cli\u003eContinued use supports further softening of deeper wrinkles over several weeks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key ingredients and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eThe serum centers on 12.5% pure vitamin C (L-ascorbic acid) for antioxidant activity, paired with hyaluronic acid to hydrate and plump the skin. The blend aims to protect against oxidative stress, promote even-looking skin tone, and support smoother surface appearance without heavy residue.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eL-ascorbic acid (12.5%) — concentrated antioxidant to boost radiance\u003c\/li\u003e\n  \u003cli\u003eHyaluronic acid — attracts and retains moisture for immediate plumping\u003c\/li\u003e\n  \u003cli\u003eStabilized patented formulation — preserves potency while remaining gentle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I add this serum to my skincare routine?\u003c\/h3\u003e\n\u003cp\u003eUse after cleansing and toning, both morning and night, and before moisturizer. Dispense two pumps and spread evenly over the face, avoiding the eye area; follow with sunscreen in the morning to protect results and skin health.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply to clean, dry skin—two pumps per application recommended\u003c\/li\u003e\n  \u003cli\u003eUse twice daily for optimal, clinically observed results\u003c\/li\u003e\n  \u003cli\u003eLayer under your moisturizer and apply sunscreen during daytime use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this serum suitable for sensitive skin?\u003c\/h3\u003e\n\u003cp\u003eThe formula is developed to balance potency with tolerability: it uses a stable, concentrated form of vitamin C while incorporating skin-hydrating hyaluronic acid. Sensitive skin may still benefit, but patch testing or gradual introduction is advised if you have highly reactive skin.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented stability helps maintain effective vitamin C levels\u003c\/li\u003e\n  \u003cli\u003eLightweight texture minimizes heavy or greasy feeling on skin\u003c\/li\u003e\n  \u003cli\u003ePatch test first and start with once-daily application if concerned\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Kiehl's Powerful-Strength Vitamin C Face Serum is aimed at anyone seeking a non-greasy, clinically informed vitamin C treatment to improve radiance, refine texture, and reduce fine lines. It fits into morning and evening regimens for normal, combination, dry, oily, and many sensitive skin types—particularly useful for people who want visible results without complex application steps.\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: Apply twice daily—morning and evening—after cleansing and toning, then follow with moisturizer. Use sunscreen in the morning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can sensitive skin use this 12.5% vitamin C serum?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Many sensitive skin types tolerate it due to the stable formulation, but patch testing and gradual introduction are recommended.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Kiehl's","offers":[{"title":"Default Title","offer_id":49622671458442,"sku":"B079X3RX47","price":307.06,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/4825\/6394\/files\/kiehls-serum-front-packaging.jpg?v=1782873246","url":"https:\/\/auviraskincare.com\/products\/kiehls-powerful-strength-vitamin-c-face-serum-12-5-vitamin-c-with-hyaluronic-acid-for-brighter-smoother-skin","provider":"Auvira Beauty","version":"1.0","type":"link"}