EGF Ampoule Serum - Skin Repair | Firming | Pore Tightening Dearderm EGF Ampoule Serum energizes cells in the epidermis, referred to as fibroblasts, which generate collagen and elastin to brighten, thicken, and firm skin. As the body ages, EGF diminishes and the elasticity of skin decreases, likely resulting in symptoms of aging like dullness, wrinkles, lines, and skin sagging. Black Caviar Ampoule Serum - Deep Hydration | Skin Elasticity | Smooth Skin Dearderm Caviar Ampoule Serum Contains the jewels of the sea caviar extract which has an adequate amount of nutrition along with a moisturizing effect that makes your skin become smooth and elastic.