{"product_id":"vitamin-c-retinol-face-serum-brighten-smooth-skin","title":"Vitamin C \u0026 Retinol Face Serum – Brighten \u0026 Smooth Skin","description":"\n\u003cp\u003eReveal a brighter, smoother, and more radiant complexion with the \u003cstrong\u003eTRSTAY Vitamin C + Retinol Super Serum\u003c\/strong\u003e. This powerhouse formula combines \u003cstrong\u003e20% Vitamin C\u003c\/strong\u003e and \u003cstrong\u003e2.5% Retinol\u003c\/strong\u003e to target uneven skin tone, dullness, and rough texture — leaving your skin visibly luminous and deeply nourished. Suitable for all skin types and genders, this lightweight oil-based serum absorbs beautifully without greasiness.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThese statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhy You'll Love It\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20% Vitamin C:\u003c\/strong\u003e A potent antioxidant that promotes a brighter, more even-toned complexion and helps shield skin from environmental stressors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.5% Retinol:\u003c\/strong\u003e A clinically studied concentration that supports skin cell renewal, helping to visibly minimize the appearance of fine lines and texture over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep Moisturizing Formula:\u003c\/strong\u003e Oil-based formulation locks in hydration, leaving skin feeling soft, supple, and deeply conditioned.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrightening \u0026amp; Smoothing:\u003c\/strong\u003e Regular use helps promote a clearer, more luminous skin surface with a noticeably smoother feel.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnisex Formula:\u003c\/strong\u003e Designed to work for all skin types and genders — a versatile addition to any skincare routine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Ingredients\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e20% Vitamin C (Ascorbic Acid) – brightens and antioxidant protection\u003c\/li\u003e\n  \u003cli\u003e2.5% Retinol – supports cell turnover and skin renewal\u003c\/li\u003e\n  \u003cli\u003eMoisturizing oil base – seals in hydration for long-lasting softness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAvailable Sizes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e5ml | 15ml | 30ml | 50ml — choose the size that suits your routine\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eCleanse your face thoroughly and pat dry.\u003c\/li\u003e\n  \u003cli\u003eApply a few drops of serum to fingertips and gently press onto face and neck.\u003c\/li\u003e\n  \u003cli\u003eAllow to absorb fully before applying moisturizer or SPF.\u003c\/li\u003e\n  \u003cli\u003eFor best results, use in your evening routine (retinol can increase sun sensitivity — always apply SPF in the morning).\u003c\/li\u003e\n  \u003cli\u003eBegin with 2–3 times per week and increase frequency as your skin adjusts.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e TRSTAY\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFormulation:\u003c\/strong\u003e Oil\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Unisex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePieces:\u003c\/strong\u003e One Unit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eExplore More Skincare\u003c\/h2\u003e\n\u003cp\u003eComplete your routine with these complementary picks from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/temporary-tattoo-markers-dual-end-10-colors-body-face-paint-pens\"\u003e10 Dual-End Temporary Tattoo Markers – Body \u0026amp; Face Paint Pens\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/transparent-double-sided-adhesive-wall-hooks-10-pairs-heavy-duty\"\u003e10 Pairs Transparent Adhesive Wall Hooks – No-Drill, Heavy Duty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAuthoritative Resource\u003c\/h2\u003e\n\u003cp\u003eFor more information on retinol and Vitamin C in skincare, visit the \u003ca href=\"https:\/\/www.fda.gov\/cosmetics\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Food \u0026amp; Drug Administration – Cosmetics Information\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Can I use this Vitamin C and Retinol serum together in the same routine?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This serum is formulated to combine both 20% Vitamin C and 2.5% Retinol in a single convenient product. For best results, apply it in the evening and follow with a moisturizer. Always use sunscreen during the day, as retinol can make skin more sensitive to sunlight.\u003c\/p\u003e\n\u003ch4\u003eQ: Which size should I choose — 5ml, 15ml, 30ml, or 50ml?\u003c\/h4\u003e\n\u003cp\u003eA: If you're trying this Vitamin C Retinol serum for the first time, the 5ml or 15ml sizes are a great way to start. For regular, daily use, the 30ml or 50ml sizes offer better value and keep your skincare routine uninterrupted.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this face serum suitable for sensitive skin?\u003c\/h4\u003e\n\u003cp\u003eA: The serum is formulated for unisex use and all skin types. However, if you have sensitive skin, we recommend starting with 2–3 applications per week to allow your skin to gradually adjust to the retinol and high-concentration Vitamin C before using it more frequently.\u003c\/p\u003e\n\u003ch4\u003eQ: How long before I see results from this brightening serum?\u003c\/h4\u003e\n\u003cp\u003eA: Most users begin to notice a brighter, smoother complexion within 4–8 weeks of consistent use. For best results, incorporate the serum into your nightly skincare routine and be sure to apply SPF moisturizer during the day.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Can I use this Vitamin C and Retinol serum together in the same routine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This serum is formulated to combine both 20% Vitamin C and 2.5% Retinol in a single convenient product. 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For best results, incorporate the serum into your nightly skincare routine and be sure to apply SPF moisturizer during the day.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Face Serums\", \"item\": \"https:\/\/oasis-select.com\/collections\/face-serums\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Vitamin C \u0026 Retinol Face Serum – Brighten \u0026 Smooth Skin\", \"item\": \"https:\/\/oasis-select.com\/products\/vitamin-c-retinol-face-serum-brighten-smooth-skin\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"50ML","offer_id":47742472323177,"sku":"14:193#50ML","price":10.66,"currency_code":"USD","in_stock":true},{"title":"30ML","offer_id":47742472355945,"sku":"14:29#30ML","price":9.26,"currency_code":"USD","in_stock":true},{"title":"15ML","offer_id":47742472388713,"sku":"14:173#15ML","price":7.39,"currency_code":"USD","in_stock":true},{"title":"5ML","offer_id":47742472421481,"sku":"14:366#5ML","price":5.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sbd4ef506a9584ef6a44a71d65aa3f8989.webp?v=1783003763","url":"https:\/\/oasis-select.com\/products\/vitamin-c-retinol-face-serum-brighten-smooth-skin","provider":"Oasis Select","version":"1.0","type":"link"}