Vitamin C 23 Serum

Pure vitamin C; a potent antioxidant and brightener.

Pro-vitamin B5 that soothes and hydrates.

An ether derivative of L-ascorbic acid in which the 3-OH position is protected by an ethyl group, making it stable in water-based formulas. Converts to Vitamin C inside skin cells. Used widely in Japanese brightening products (Shiseido, Elixir) as a quasi-drug-adjacent brightening active.

An antioxidant used to reduce the look of puffiness and dark circles.

The salt form of hyaluronic acid; penetrates more readily.

A nucleoside used at low concentrations to help smooth the look of fine lines; a common K-beauty anti-aging active.

An amino-sugar (a hyaluronic acid building block) that helps fade uneven pigmentation and supports skin hydration. Pairs well with niacinamide for tone.

An extract from the fruit of Gardenia florida (Cape jasmine) containing crocin and other antioxidant polyphenols that protect skin from oxidative stress.

A gentle soothing and skin-conditioning agent.

A form of vitamin E (tocotrienol forms: alpha, beta, gamma, delta) with unsaturated side chains. More potent free radical scavenging than tocopherols. Rice bran is one of the richest natural sources. Used in Bijin Nuka's rice-based moisturizer.

Vitamin E; a lipid-soluble antioxidant that also conditions skin.

A naturally occurring amino acid that acts as a humectant and supports the skin's own moisture-retention system.

A versatile vitamin B3 derivative with multiple benefits.

A tripeptide antioxidant valued in skincare for its skin-brightening and free-radical-scavenging effects.

An extract from carrot (Daucus carota sativa) root rich in beta-carotene and other carotenoids, used in cosmetics for antioxidant and skin-brightening benefits.

A botanical that soothes and gently brightens.

A carotenoid pigment found in carrots, algae, and other plants. Functions as an antioxidant and as provitamin A (converts to retinol in the body). In skincare, also used as a colorant and antioxidant booster.