lipid lamellar bilayer diagram on white background.

acids aesthetic aging allergen anatomy and arrangement bacteria barrier beauty bilayer biology body bricks care cell ceramide cholesterol corneocyte corneodesmosome corneum cornified damaged decrease dehydrated dermatology diagram envelope epidermis esthetic factor fatty free healthy horny hydration illustration intercellular irritated lamellar layer lipid lipids lost medical model moisture moisturizing mortar natural part physiological reduce restoration sebum skin stimulation stratum structure ultraviolet unhealthy vector virus water