L'Oréal Professional Blond Studio Oil Developer Cosmeti Shampoo your hair with a

Shampoo your hair with a Biolage SmoothProof shampoo and rinse thoroughly

the adhesive is user-friendly

clear serum that safely and gently lightens delicate skin

Reduces colour fade

L'Oréal Professional Blond Studio Oil Developer Cosmeti Shampoo your hair with aBlond Studio 9 Oil Developer is oil enriched to enhance the overall performance of the 9 level lightener. The oil is responsible for boosting the lift and keeping the lightener result predictable. It is our way to achieve up to 9 levels of lift, quicker, with lower volume developers. The oil base in the developer also offers optimal mixing and application due to its creamy consistency. DEVELOPMENT TIME: The development time for Blond Studio 9 is a