For optimum results mix Fascinelle Developer (also known as Peroxide) with professional hair colour to activate.
Different effects and levels of tone are determined by the strength of the developer or peroxide.
Read the instructions carefully on your hair colour to match the correct level of developer with your hair colour.
Fascinelle Developer is a thicker creamy formulation and is available in:
10 vol (3%) 20 vol (6%), 30 vol (9%) & 40 vol (12%).