To Use: In a bowl, mix one part Topchic lotion (10-40 Vol.) with one part Topchic color. For virgin application, start with the darkest part of the hair and apply color 1/2" from scalp to ends. Wait 5-10 minutes, then apply remaining color to scalp area. Total process time 30 minutes. For retouch application, apply color to regrowth, process for 15-20 minutes, pull through shaft and ends and process an additional 10-15 minutes. For best results, approximately halfway through processing, Color Balance with traget shade of Colorance acid color on the shaft and ends, rather than pulling the Topchic color through the hair. Rinse, shampoo and condition with Definition Color and Highlights shampoo and conditioner. To Use with the Highlift 11-Series: In a bowl or colormat, mix two parts Tophchic lotion (30-40 Vol.) with one part Topchic color. For virgin application, start with the darkest part of the hair and apply color 1/2" from scalp to ends. Wait 10-15 minutes, then apply remaining color to scalp area.