Pravana Silk Degrees Prep & Treat 14.8 oz Pre & Post Color Treatment As a pre-color treatment: Shampoo and towel dry hair. Apply Silk Degrees Prep & Treat. Process for 5 minutes, then rinse, dry and apply color to hair. As a conditioning treatment: Simply apply to towel-dried hair, process for 5 minutes then rinse, dry and style hair as desired.