Some By Mi’s Retinol Intense Reactivating Serum is a cream-type serum that’s designed to promote firmer, brighter, and bouncier skin. It contains a “Triple Retinol” blend and is suitable for sensitive skin. The serum also contains Truecica Complex, which improves skin firmness and elasticity, saturates the cells of the dermis with moisture, and forms a protective barrier that protects the skin from UV radiation and negative environmental factors