Toleriane Double Repair Face Moisturizer

As listed: Niacinamide

A form of vitamin B3 that boosts ceramide synthesis to strengthen the barrier and reduce water loss, while calming inflammation, regulating sebum, and blocking melanosome transfer to keratinocytes. It reduces redness, blemishes, and uneven tone.

A small humectant that attracts and holds water in the stratum corneum, delivered into the epidermis partly via aquaporin-3. It raises hydration, improves plasticity and desquamation, and supports barrier recovery — one of the best-evidenced moisturizing agents.

As listed: Ceramide NP

Sphingolipids that make up roughly 50% of stratum corneum lipids by mass (with ~25% cholesterol and ~15% free fatty acids) and organize into the lamellar bilayers that form the permeability barrier. Reinforcing them lowers water loss; deficiencies are a hallmark of atopic dermatitis.

As listed: Tocopherol

A fat-soluble antioxidant that neutralizes UV-generated free radicals and prevents lipid peroxidation and oxidative photoaging. It also moisturizes the stratum corneum and has anti-inflammatory activity — and works best alongside vitamin C.