L'Oréal Professional Blond Studio Oil Developer Peroxide:20 Vol this semi-permanent dye keeps your

this semi-permanent dye keeps your hair soft

adds shine and helps shield hair from the outside in

Creamy toffee fragrance

and hair that is prone to breakage

With its Transactiv Delivery System 2

L'Oréal Professional Blond Studio Oil Developer Peroxide:20 Vol this semi-permanent dye keeps yourBlond 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