salerm shade correctin oil brings a new cosmetic treatment dimension to the technical process of lightening hair. It adds extra neutralizing pigments. This way more neutral tones and better balanced shades can be achieved. It's perfect solution to lighten any type, in a hydro-lipid medium. The lightenings is more effective and the hair remains in tact during the process. The end result is a soft, manageable and cared for head of hair. Thanks to the final pate texture this product guarantees the users health due to a lack of volatile powders. Directions: mix 3og of lightening powder with the contents of a phial of salerm shade cerrecting oil for lightening in a clean, non-metalic bowl until an even pate consistency is achieved with the aid of a non-metalic spatula or brush. Add 100ml of cream developer (20,30 or 40vol) and mix. The leave-on time will vary from 20 to 60 min. Once the leave-on time is up rinse thoroughly with warm water, wash gently without rubbing the scalp with specific Salerm shampoo.