A Ret 0.5% Gel is a form of vitamin A. It is used for  acne, a common skin condition that occurs when the pores of your skin become clogged causing blackheads, whiteheads, or pimples. It also reduces the wrinkles on your face. It works by reducing oil production in the skin and replenishing acne-prone skin. A Ret 0.5% Gel  may cause peeling of the skin.