Yuja Niacin 30Days Miracle Brightening Sleeping Mask

Aqueous or glycolic extract from the yuzu fruit (Citrus junos), a Japanese citrus valued in skincare for its high vitamin C precursor content, flavonoids, and aromatic compounds. Antioxidant and mild brightening action.

A versatile vitamin B3 derivative with multiple benefits.

A gold-standard humectant that draws water into the skin.

Pro-vitamin B5 that soothes and hydrates.

Extract from the leaves of Thuja orientalis (syn. Platycladus orientalis), the Chinese or Oriental arborvitae. Contains flavonoids (quercetin, hinokiflavone, amentoflavone), terpenoids, and tannins. Used in Korean acne and trouble-targeting formulas for its antimicrobial and anti-inflammatory properties. The leaf extract at cosmetic concentrations is considered safe — distinct from the essential oil, which contains neurotoxic thujone.

Extract from the leaves of Zanthoxylum schinifolium, a flowering shrub of the Rutaceae family native to East Asia (Korea, Japan, China). The genus Zanthoxylum (pepper trees) is used extensively in traditional medicine — the leaf extract contains alkaloids (chelerythrine, magnoflorine), lignans, and flavonoids with documented antimicrobial and anti-inflammatory effects. Appears in K-beauty acne and trouble-care formulas alongside other botanical actives.

A root extract of Japanese knotweed (Polygonum cuspidatum), the richest natural source of resveratrol, used for antioxidant protection and brightening in skincare.

An aqueous or hydroglycolic extract of peppermint (Mentha piperita) leaves. Unlike peppermint essential oil, the extract has milder menthol content; used for cooling, soothing, and antioxidant properties.

An extract from Mentha aquatica (water mint) containing menthol, flavonoids, and rosmarinic acid that imparts mild soothing, cooling, and antimicrobial benefits to cosmetic formulations.

An extract from the leaves of Mentha rotundifolia (apple mint or round-leaf mint), a lower-menthol mint variety distinct from peppermint, used for mild soothing and antioxidant properties in skincare formulations.

An extract from the flowers of the sacred lotus (Nelumbo nucifera) rich in flavonoids and tannins with antioxidant, soothing, and mild brightening properties.

Extract from the rhizome of Coptis japonica (Japanese goldthread). Rich in berberine and other isoquinoline alkaloids with potent anti-inflammatory, antimicrobial, and antioxidant properties. Used in traditional Japanese and Chinese medicine.

A carotenoid-rich sea buckthorn fruit extract delivering antioxidants and skin-nourishing nutrients.

A gentle brightening agent that inhibits pigment formation.

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

Pure vitamin C; a potent antioxidant and brightener.

A stable, water-soluble vitamin C derivative that converts to ascorbic acid in skin. Gentler and more shelf-stable than pure L-ascorbic acid.

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

The synthetic, stable form of vitamin B12, used in cosmetics for its antioxidant and skin-conditioning properties; studies suggest topical B12 can reduce eczema symptoms and support skin barrier recovery.

A chamomile-derived soothing agent.

An oil-soluble, highly stable vitamin C derivative that penetrates well and converts to ascorbic acid in skin. The vitamin C active in Melano CC.

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

A sugar-based humectant that holds water and helps skin resist dehydration stress.

An isolated active from centella with strong soothing effects.

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