The science
A sheet mask acts by occlusion and humectancy, and this one's list supports both plainly. Twenty minutes under a saturated cellulose sheet blocks evaporation and drives water and small humectants into the upper stratum corneum, producing a measurable, short-lived rise in hydration and the plumped, dewy appearance that fades over a day; the double-wave fabric with air holes claimed to enhance cooling does so by evaporative loss through the holes, which is also why a drying sheet should be removed. The humectant tier is glycerin, dipropylene glycol, glycereth-26, propanediol, a native hyaluronic acid, a hydrolysed low-weight fraction and sodium hyaluronate, biosaccharide gum-1, a fermented polysaccharide with water-binding and soothing data, and glycoprotein at trace; carrageenan and hydroxyethylcellulose thicken. Pinus densiflora leaf extract contributes polyphenols and terpenes with in-vitro antioxidant and anti-inflammatory data and functions as the water phase; Centella asiatica extract at sixth is a whole-plant extract whose triterpenes have clinical data on reduced erythema, improved barrier hydration and faster recovery of irritated skin at concentrations around one percent, which its position is consistent with; Portulaca oleracea extract has laboratory anti-inflammatory and antioxidant data and a long record in Korean soothing formulas. The four purified triterpenes, asiaticoside, asiatic acid, madecassoside and madecassic acid, are listed near the end and, by analogy with the concentrations the brand declares on its lotion, are present at trace levels far below their evidence base; they do not add to the whole extract's effect. Capryloyl salicylic acid, LHA, is a lipophilic salicylate ester that exfoliates at 0.3 to 1 percent in leave-on use over weeks; at twenty-fifth position in a twenty-minute rinse-free mask its contribution is nil, and the dead-cell claim is unsupported.
Tolerability is the formula's strongest feature: no fragrance, essential oils, alcohol, oils, silicones or dyes, a mild preservation system of 1,2-hexanediol and hydroxyacetophenone, and nothing relevant to Malassezia. Occlusion intensifies any ingredient, so skin in an active eczema flare should be tested, and a sheet left to dry reverses the hydration. Nothing on the label conflicts with pregnancy or breastfeeding.