Osmosis +MD Calm – Gentle Retinal Serum is an anti-aging facial serum for dry, aging, and sensitive skin. It rebuilds your skin’s outer dermis while reducing inflammation and hypersensitivity. Vitamin A conditions your complexion to encourage accelerated skin cell rejuvenation. Lactic acid resurfaces your natural barrier to soften the skin’s overall texture. As a result, your complexion appears balanced and more youthful.