Ingredient

Humectants

Water-attracting agents (glycerin, hyaluronic acid, urea) that draw moisture into the stratum corneum.

Hydration axisReview

Mechanism of action

Humectants pull water from deeper layers and the environment into the stratum corneum.

They are most effective combined with occlusives in low-humidity contexts.

Targets

Stratum corneum water content; central to texture, comfort, and barrier performance.

Stratum corneum + lipid matrix that controls water loss and limits irritant entry.