Oxidizing agent for blonde hair that shines with health.| When bleaching your hair, don't compromise. The activating emulsion L'Oréal Professionnel Blond Studio Nutri-Developer will take perfect care of your hair during the lightening procedure. Together with una powder or una cream, it creates a una mixture that gives your locks a beautiful and natural-looking color while ensuring a una rich dose of nourishment and hydration.