Choose the right toner shade for your hair color and goal
Wash hair with a clarifying shampoo if needed
Towel-dry hair until damp
Put on gloves
Mix toner with developer exactly as directed on the product
Section hair evenly
Apply toner quickly and evenly from roots to ends or to the brassy areas only
Saturate all targeted sections thoroughly
Check the hair every few minutes while processing
Rinse out the toner when the desired tone is reached
Use a sulfate-free conditioner or a toner-safe mask
Dry and style hair as usual
Repeat only when needed to avoid over-toning