ACTIVATOR POWDER Activator powder can refer to various substances depending on the context. Here are a few common meanings: Chemical Activation: In chemistry or industrial processes, an activator powder may be used to initiate or accelerate chemical reactions. These could include substances like catalysts or initiators. Cosmetics: Activator powders are sometimes used in cosmetic applications, particularly in nail systems. In acrylic or gel nail systems, activator powder is used to catalyze or accelerate the hardening process of the nail product.