_____ helps protect sensitive cells from UV rays.

Trichoptilosis is the technical term for _____.

Which type of line is used to create width in the hair, extending in the same direction while maintaining a constant distance apart?

Which technique involves sewing a weft of faux or natural hair onto a cornrow braid, and then wrapping and locking to create African locks or dreadlocks?

For control during haircutting, the hair is parted into working areas called _____.

For control during haircutting, the hair is parted into working areas called _____.

For control during haircutting, the hair is parted into working areas called _____.

A physical side bond that is easily broken by water and heat is a _____ bond.

The natural nail is composed mainly of a hard, fiber-shaped _____.

What are two conditioning agents that help restore moisture and elasticity to the hair shaft?