{"product_id":"4-in-1-face-serum-hyaluronic-acid-niacinamide-vitamins-moisturizing-firming","title":"4-in-1 Face Serum – Hyaluronic Acid, Niacinamide \u0026 Vitamins","description":"\n\u003cp\u003eElevate your daily skincare routine with the \u003cstrong\u003eRDQCTQ 4-in-1 Face Skin Care Serum\u003c\/strong\u003e — a powerhouse formula that combines \u003cstrong\u003eHyaluronic Acid, Niacinamide, and essential Vitamins\u003c\/strong\u003e into one lightweight, multi-action serum. Designed for all genders and all skin types, this serum works to deeply hydrate, firm, smooth, and visibly rejuvenate your complexion in one easy step.\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\u003eDeep Hydration:\u003c\/strong\u003e Hyaluronic Acid draws moisture deep into the skin layers, leaving your face plump, supple, and visibly refreshed throughout the day.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrightening \u0026amp; Barrier Support:\u003c\/strong\u003e Niacinamide (Vitamin B3) helps improve skin's natural barrier function, visibly evens skin tone, and enhances overall radiance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVitamin-Rich Nourishment:\u003c\/strong\u003e A blend of essential vitamins nourishes and energises skin for a healthy, luminous glow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFirming \u0026amp; Smoothing:\u003c\/strong\u003e The serum's firming complex helps minimise the appearance of fine lines and wrinkles, supporting a more youthful-looking complexion over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-in-1 Multi-Action Formula:\u003c\/strong\u003e One serum does it all — deep moisturisation, firming, anti-wrinkle, and age-defying benefits in every drop.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnisex Formula:\u003c\/strong\u003e Formulated for both men and women who want effective, fuss-free skincare.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Ingredients\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHyaluronic Acid\u003c\/strong\u003e – Intense, long-lasting hydration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNiacinamide (Vitamin B3)\u003c\/strong\u003e – Visibly brightens and strengthens the skin barrier\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Vitamin Complex\u003c\/strong\u003e – Nourishes and revitalises for a healthy glow\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e RDQCTQ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e RD004\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e 40ml \/ 60ml\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFormulation:\u003c\/strong\u003e Oil-based Serum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Unisex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShelf Life:\u003c\/strong\u003e 3 Years\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CPNP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eCleanse and tone your face as usual.\u003c\/li\u003e\n  \u003cli\u003eApply 2–3 drops of serum to fingertips.\u003c\/li\u003e\n  \u003cli\u003eGently press and smooth onto face and neck.\u003c\/li\u003e\n  \u003cli\u003eFollow with your favourite moisturiser. Use morning and\/or evening for best results.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eExplore More Skincare Essentials\u003c\/h2\u003e\n\u003cp\u003eComplete your routine with these related products:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ampoule-head-shock-absorbing-cap-adapter-03ml-05ml-hyaluronic-pen\"\u003e0.3ml \u0026amp; 0.5ml Ampoule Head Cap Adapter for Hyaluron Pen\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-3ml-0-5ml-ampoule-head-cartridge-hyaluron-pen-skin-care\"\u003e0.3ml \u0026amp; 0.5ml Hyaluron Pen Ampoule Head Cartridge | Skin Care\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAuthoritative Skincare Resource\u003c\/h2\u003e\n\u003cp\u003eFor general skincare guidance and ingredient information, visit the \u003ca href=\"https:\/\/www.fda.gov\/cosmetics\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Food \u0026amp; Drug Administration – Cosmetics\u003c\/a\u003e resource page.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What skin types is this 4-in-1 Hyaluronic Acid Niacinamide Serum suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: This serum is formulated for all skin types — including dry, oily, combination, and sensitive skin. Its unisex, lightweight formula absorbs quickly without clogging pores, making it suitable for everyday use for both men and women.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does Niacinamide benefit the skin in this serum?\u003c\/h4\u003e\n\u003cp\u003eA: Niacinamide (Vitamin B3) is a well-researched skincare ingredient that helps strengthen the skin's natural moisture barrier, visibly even out skin tone, and enhance overall radiance. Combined with Hyaluronic Acid, it delivers both hydration and a more luminous complexion.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this serum with my existing moisturiser or sunscreen?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! Apply the serum after cleansing and toning, then layer your moisturiser or SPF product on top. This serum is designed to complement your existing skincare routine as a hydrating and firming base step.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What size options are available?\u003c\/h4\u003e\n\u003cp\u003eA: The RDQCTQ 4-in-1 Face Serum is available in both 40ml and 60ml sizes, giving you the flexibility to choose the option that suits your routine and budget.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What skin types is this 4-in-1 Hyaluronic Acid Niacinamide Serum suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This serum is formulated for all skin types — including dry, oily, combination, and sensitive skin. Its unisex, lightweight formula absorbs quickly without clogging pores, making it suitable for everyday use for both men and women.\"}}, {\"@type\": \"Question\", \"name\": \"How does Niacinamide benefit the skin in this serum?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Niacinamide (Vitamin B3) is a well-researched skincare ingredient that helps strengthen the skin's natural moisture barrier, visibly even out skin tone, and enhance overall radiance. Combined with Hyaluronic Acid, it delivers both hydration and a more luminous complexion.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this serum with my existing moisturiser or sunscreen?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! Apply the serum after cleansing and toning, then layer your moisturiser or SPF product on top. This serum is designed to complement your existing skincare routine as a hydrating and firming base step.\"}}, {\"@type\": \"Question\", \"name\": \"What size options are available?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The RDQCTQ 4-in-1 Face Serum is available in both 40ml and 60ml sizes, giving you the flexibility to choose the option that suits your routine and budget.\"}}]}\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\": \"4-in-1 Face Serum – Hyaluronic Acid, Niacinamide \u0026 Vitamins\", \"item\": \"https:\/\/oasis-select.com\/products\/4-in-1-face-serum-hyaluronic-acid-niacinamide-vitamins-moisturizing-firming\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"60ml","offer_id":47748732747881,"sku":"200000581:200008193#60ml","price":8.26,"currency_code":"USD","in_stock":true},{"title":"40ml","offer_id":47748732780649,"sku":"200000581:200006902#40ml","price":8.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/S52b7bce454f445ba924a53434acde733k.webp?v=1783087998","url":"https:\/\/oasis-select.com\/products\/4-in-1-face-serum-hyaluronic-acid-niacinamide-vitamins-moisturizing-firming","provider":"Oasis Select","version":"1.0","type":"link"}