Hydrolyzed actin is a substance (actin hydrolysate - Remark: Actin is a structural protein that occurs in all eukaryotic cells. Actin is part of the cytoskeleton and one of the 5 most common proteins in eukaryotic cells), which is used in cosmetic formulations. Hydrolyzed actin acts as a skin care agent (nourishes the skin) and hair conditioning agent (makes the hair easy to comb, smooth, soft and shiny and gives it volume).