A review.This article discusses the smart materials for triggered release of cosmetics.Though these synthetic systems are rudimentary compared with the responsive mechanisms found in nature, their complexities are rapidly increasing and furthering the development of highly selective and sensitive materials.Multitriggered systems capable of responding to systematic stimuli for the release of therapeutic agents in vivo are exciting frontiers in bioengineering, materials science and personal care; although caveats exist such as the need for stringent preparation methods, including controlled lighting, pH or temperature, depending on the stimuli-responsive polymer used.