Canities - The scientific name for grey hair.
Catagen - The resting phase of the hair growth cycle.
Chelating Shampoo - It works by binding to minerals and metals and removing them from the hair. This is good for removing hard-water buildup or chlorine.
Chemical Haircut - Hair that has been processed so many times by bleach, color or perms that it has broken off.
Clarifying Shampoo - Shampoo that is stronger than normal shampoo, designed to remove buildup from hair products, hard water, etc. It has a strong pH level and should not be used more than once or twice per week.
Coarse - Refers to the diameter of the hair, meaning the hair is large in diameter and feels rough to the touch.
Conditioner - A creamy hair product used after shampoo to soften and detangle hair.
Cones - Short for silicones, these are plastic-like coating that prevents moisture and humidity from penetrating the hair shaft, and can make the hair frizzy.
Cortex - The body of hair, consisting of 90% of the weight. This is where the color molecules are found.
Crown - The area on top of the head.
Cuticle– The outermost, scale-like surface of the hair shaft that helps strengthen and protect hair.