• Pre-lighten the hair to desired level before applying toner. • Mix 1 part Wella Colour Charm toning color with 2 parts 20 volume Wella Colour Charm developer. • Apply to towel dried hair then, develop for up to 30 minutes. • Check frequently to see if desired results are achieved. • You can customize the toner formula by intermixing shades. • For example, if you want a shade that is in between an ash tone and a warm tone, try mixing equal parts of T-18 and T-14 with equal parts of T-11 or T-35.
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