What is the average pH for hair and skin?

Which of the following statements is true of a virgin relaxer service?

Which of the following refers to the study of the hair, including it disease and care?

Match each tool or supply used in relaxer services with its description.

What will happen if you apply thio relaxer to hair that has been treated with a hydroxide relaxer?

A client wants to strengthen coarse hair. The client mentions that the hair often seems frizzy and is concerned that if their hair loses all its curl it might look even frizzier.  The client is hesitant to make a permanent change.  Which service should the cosmetologist recommend?

Keratin -based smoothing treatments last for up to 12 weeks.

Acidic perm solutions are stronger, therefore making it more suitable for coarse and moisture-resistant hair.

Relaxers should be completed on __________ hair. 

An exothermic chemical reaction produces heat, while an endothermic chemical reaction absorbs heat from its surroundings.