Please follow appropriate safety instructions and our latest Vivid Mask Back Wall Chart. How to Use: After washing your hair and dabbing off excess water, apply the colour mask, comb and leave on for 5 to 15 minutes according to desired colour intensity. The next step is to rinse well. Use our Untangle Me Spray as a pH3.5 stabiliser. A stabiliser helps restore the pH of the scalp and hair to perfect condition, favouring the closing of hair scales and extending colour fastness while increasing hair shine and silkiness.