{"product_id":"jumiso-all-day-vitamin-vc-ip-1-0-firming-serum-30ml","title":"Jumiso All Day Vitamin VC-IP 1.0 Firming Serum 30ml","description":"\u003ch2\u003eJumiso All Day Vitamin VC-IP 1.0 Firming Serum: Oil-Soluble Vitamin C for Sensitive Skin\u003c\/h2\u003e\n\n\u003cp\u003eTraditional vitamin C serums use L-ascorbic acid, which is water-soluble, unstable, and often irritating at effective concentrations. Jumiso's All Day Vitamin VC-IP 1.0 Firming Serum uses tetrahexyldecyl ascorbate (VC-IP), an oil-soluble vitamin C derivative that's more stable, gentler on sensitive skin, and penetrates the lipid-rich outer skin layers more easily. At $29.12 for 30ml, this serum lands in the affordable-premium range for Korean VC-IP products.\u003c\/p\u003e\n\n\u003cp\u003eVC-IP is one of the more effective vitamin C derivatives on the market, second only to pure L-ascorbic acid in antioxidant activity and brightening performance, but without the pH instability and irritation issues that make L-ascorbic acid challenging for sensitive skin. Once absorbed, VC-IP is enzymatically converted to L-ascorbic acid in the skin, which delivers the same collagen-boosting and pigment-regulating benefits.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\n\u003cp\u003eVC-IP provides antioxidant protection against UV damage, inhibits tyrosinase (the enzyme responsible for melanin production, which causes dark spots), and stimulates collagen synthesis. Over 4 to 8 weeks of daily use, expect brighter skin, reduced hyperpigmentation, and subtle firming. The oil-soluble format absorbs without the typical vitamin C sting, making it usable for sensitive skin that can't tolerate L-ascorbic acid.\u003c\/p\u003e\n\n\u003ch3\u003eWho It's For\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitive skin seeking vitamin C benefits:\u003c\/strong\u003e VC-IP is the gentlest effective derivative.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-acne hyperpigmentation:\u003c\/strong\u003e Inhibits new melanin while fading existing spots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime antioxidant protection:\u003c\/strong\u003e Pairs excellently with SPF for UV protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry skin that reacts to traditional vitamin C:\u003c\/strong\u003e Oil-soluble absorbs without drying.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDull complexion:\u003c\/strong\u003e Brightening effect visible within 2 to 4 weeks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eVolume: 30ml\u003c\/li\u003e\n\u003cli\u003ePrice: $29.12\u003c\/li\u003e\n\u003cli\u003eHero active: tetrahexyldecyl ascorbate (VC-IP), concentration approximately 1%\u003c\/li\u003e\n\u003cli\u003eTexture: lightweight serum with subtle oil slip\u003c\/li\u003e\n\u003cli\u003eFragrance: very mild\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\n\u003cp\u003eApply 3 to 4 drops in the morning after toner, before moisturizer and SPF. VC-IP is more stable than L-ascorbic acid and doesn't require strict pH timing. Can be used twice daily once acclimated. Always pair with SPF in the morning; vitamin C and sunscreen synergize for enhanced UV protection.\u003c\/p\u003e\n\n\u003cp\u003eFor sensitive skin: start with every other morning for the first week. Build to daily use as tolerance increases. If layering with retinol, use VC-IP in the morning, retinol at night.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003ch4\u003eIs 1% VC-IP enough?\u003c\/h4\u003e\n\u003cp\u003eVC-IP is effective at lower concentrations than L-ascorbic acid because of its superior stability and penetration. 1% VC-IP is comparable in effect to roughly 5 to 10% L-ascorbic acid, but without the irritation. For sensitive skin, 1% is the sweet spot.\u003c\/p\u003e\n\n\u003ch4\u003eHow does it compare to SkinCeuticals CE Ferulic?\u003c\/h4\u003e\n\u003cp\u003eDifferent mechanism. SkinCeuticals uses 15% L-ascorbic acid with vitamin E and ferulic acid for stability. Higher concentration, stronger effect, more irritation potential. VC-IP is gentler, slower-building, but better tolerated by sensitive skin.\u003c\/p\u003e\n\n\u003ch4\u003eDoes it oxidize and turn orange?\u003c\/h4\u003e\n\u003cp\u003eVC-IP is far more stable than L-ascorbic acid. It won't turn brown within weeks of opening like traditional vitamin C serums. Expect up to 12 months of stability after opening if stored properly (cool, dark place).\u003c\/p\u003e\n\n\u003ch4\u003eHow long until I see results?\u003c\/h4\u003e\n\u003cp\u003eBrightening: 2 to 4 weeks. PIH fading: 6 to 12 weeks. Firmness: 12 to 16 weeks. Vitamin C is a slow build; consistency matters more than concentration.\u003c\/p\u003e\n\n\u003ch4\u003eCan I use it with niacinamide?\u003c\/h4\u003e\n\u003cp\u003eYes. The old \"vitamin C and niacinamide can't coexist\" claim has been largely debunked for modern formulations. Layer freely.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\n\u003cp\u003ePair with a ceramide moisturizer to seal. For nighttime brightening, layer with a retinol ampoule.\u003c\/p\u003e\n\n\u003cp\u003eBrowse the full \u003ca href=\"\/he\/collections\/jumiso\"\u003eJumiso collection\u003c\/a\u003e or related: \u003ca href=\"\/he\/collections\/vitamin-c\"\u003eKorean vitamin C products\u003c\/a\u003e, Korean serums.\u003c\/p\u003e\n","brand":"Jumiso","offers":[{"title":"Default Title","offer_id":52944026468724,"sku":"9454402128","price":29.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0899\/8862\/8852\/files\/web_final_1_75861fe6-d88d-4dab-af3b-36cd9b5024d4.jpg?v=1776236858","url":"https:\/\/www.mirai-skin.com\/he\/products\/jumiso-all-day-vitamin-vc-ip-1-0-firming-serum-30ml","provider":"Mirai Skin","version":"1.0","type":"link"}