The surface is viscid when moist from the separable gelatinous pellicle. The development of biofilm begins with pellicle formation. It is viscid when moist from a separable gelatinous pellicle. It typically has a yellowish-brown outer pellicle which is a result of this curing process. The formation of the cellulose pellicle occurs on the upper surface of the supernatant film. Saliva forms a pellicle on the surface of the tooth to prevent wearing. "Acetobacter cellulose pellicle as a temporary skin substituite". Some calculus may form even without plaque deposits, by direct mineralisation of the pellicle. Being components of the pellicle, these enzymes are catalytically highly active. This consolidated layer is known formally as a pellicle. SiNx pellicle membranes also failed at 82 W equivalent EUV source power levels. The cap is viscid and has a separable pellicle. The leaves and the skins (husk and pellicle) of the fruits provide a hair shampoo. The process of pellicle formation involves significant microbial activities and related substances. The pellicle is not smooth, but textured with hexagonal or rectangular depressions.