Nikonikonii21viz
Answered

why is it important to perform hair and and skin test prior to hair bleacing?​

Sagot :

Jisoos666viz

Answer:

to know if ur allergic or not, and also to test the product

Roannegonzales7viz

Answer:

They help rule out unwanted allergic reactions and also help indicate if your hair is in good enough condition to be bleached or if it is suitable for the colour or toner you wish to use.