UNI & CORE 13.5% Pure Vitamin C Ampoule Serum with Glutathione
High-potency brightening, done properly. This Korean ampoule packs 13.5% pure vitamin C — 135,000 ppm ascorbic acid — alongside glutathione and beta-carotene, held in a proprietary stabilized dual-layer formula that keeps oxidation-prone vitamin C performing. Hydrolyzed elastin and chitosan add elasticity care; hyaluronate, beta-glucan and panthenol keep skin comfortable.
13.5% Pure Vitamin C
135,000 ppm ascorbic acid delivers concentrated brightening care for dull-looking skin and a clearer, more radiant complexion.
Vitamin C + Glutathione
Pure vitamin C paired with glutathione and beta-carotene, plus beta-glucan and panthenol for antioxidant, moisturizing and calming support.
Stabilized Dual-Layer
Proprietary dual-layer technology helps stabilize oxidation-prone vitamin C in a high-moisture base — so potency holds up through the bottle.
Radiance + Elasticity
Hydrolyzed elastin and chitosan support elasticity care, while glycerin and sodium hyaluronate help maintain moisture.
Why 13.5% Pure Vitamin C — and Why Stability Matters
Most vitamin C serums fail for the same reason: pure ascorbic acid oxidizes. That is why so many turn brown on the shelf and lose their punch long before the bottle is finished. This ampoule approaches the problem from both ends — a genuinely high 13.5% concentration (135,000 ppm) for brightening care, held in a proprietary stabilized dual-layer formula designed to keep oxidation-prone vitamin C stable in a high-moisture base.
Glutathione is the other half of the story. It is one of the most sought-after antioxidants in K-beauty brightening care, and here it works alongside vitamin C and beta-carotene rather than in place of it. Beta-glucan and panthenol round the formula out so a high-strength vitamin C ampoule still feels comfortable in daily use.
How to Use the Vitamin C Ampoule
Start with clean skin. Our Vita C Enzyme Powder Wash pairs naturally here.
Apply toner and let it absorb so the ampoule spreads evenly.
Apply a moderate amount evenly over the face, morning and evening.
Follow with moisturizer. In the morning, always finish with sunscreen.
Vitamin C Ampoule — FAQ
What does a 13.5% vitamin C ampoule do for your skin?
It delivers 135,000 ppm of ascorbic acid in a concentrated serum format. Vitamin C at this strength is used for brightening care on dull-looking skin, helping the complexion look clearer, more even and more radiant with consistent daily use.
What is the difference between an ampoule and a serum?
In Korean skincare, an ampoule is typically a more concentrated version of a serum — a higher dose of actives in a smaller volume. This is an ampoule-strength serum, used after cleansing and toner, before moisturizer.
Why does vitamin C need a stabilized formula?
Pure vitamin C is prone to oxidation, which is why many vitamin C serums turn brown and lose potency. This ampoule uses a stabilized dual-layer technology to help keep vitamin C stable in a high-moisture formula.
What does glutathione do in a vitamin C serum?
Glutathione is a well-known antioxidant in K-beauty brightening care. Paired here with pure vitamin C and beta-carotene, plus beta-glucan and panthenol, it supports antioxidant, moisturizing and calming care.
How do I use it?
Apply a moderate amount evenly over the face every morning and evening after cleansing and toner, then follow with moisturizer. In the morning, always finish with sunscreen.
Where can I buy it?
On Amazon.com with Prime shipping, or on the official UNI&CORE store with worldwide shipping in USD.