Differin(Adapalen) is a topical medicine (a medication that is applied to the surface of the skin) similar to vitamin A. It helps the skin to renew itself.
Generic Nootropil is a nootropic agent i.e. a psychotropic drug which improves directly the efficiency of the higher epencephalic functions of the brain involved in cognitive processes such as those related to learning, memory, thought and consciousness, both in normal and deficient situations, without being sedative of psycho stimulant.