5 Primary Characteristics of Hair
Density: Dense hair needs moreproduct to properly cover all hair. To avoid lighter lines of demarcation, make sure the hair is not pressed against the scalp while processing.
Hair Porosity: Porous hair accepts color easier and also may release color faster. Holds moisture and liquid, and accepts coolness while rejecting warmth. Dry, non-porous hair has the tendency to resist color, and is more difficult to lighten.
Hair Tenacity: Tenacious hair is more difficult to color. The tight cuticle structure makes it more resistant and difficult to penetrate, and needs maximum processing time.
Hair Elasticity: Elastic hair has the ability to stretch and return to its natural state. If the hair does not stretch, or is not in excellent condition, it should be treated with Mastey SuperPac before coloring to rebuild its structure.