Salon directions: salon directions: depending on the desired degree of lightening and consistency, mix with ion™ sensitive scalp™ crème developers 10 vol., 20 vol., 30 vol., or 40 vol. in a ratio of 1:1.5 up to 1:2 in a non-metallic bowl. when applying directly to the scalp, do not exceed 20 vol. developer. apply to dry, unwashed hair. do not use heat. use mixture immediately and discard any unused mixture. processing time depends on the condition of the hair and the desired degree of lightening. check every 5-10 minutes during processing. do not continue to process if adverse reaction occurs (e.g. itching, burning, rash or any unexpected reaction). stop and immediately rinse with water. if necessary, seek medical treatment. maximum total processing time is 50 minutes. rinse thoroughly and lightly shampoo.

Salon directions: salon directions: depending on the desired degree of lightening and consistency, mix with ion™ sensitive scalp™ crème developers 10 vol., 20 vol., 30 vol., or 40 vol. in a ratio of 1:1.5 up to 1:2 in a non-metallic bowl. when applying directly to the scalp, do not exceed 20 vol. developer. apply to dry, unwashed hair. do not use heat. use mixture immediately and discard any unused mixture. processing time depends on the condition of the hair and the desired degree of lightening. check every 5-10 minutes during processing. do not continue to process if adverse reaction occurs (e.g. itching, burning, rash or any unexpected reaction). stop and immediately rinse with water. if necessary, seek medical treatment. maximum total processing time is 50 minutes. rinse thoroughly and lightly shampoo.