Achieve calm, manageable hair with the System Professional Smoothen Mask; an intensive weekly treatment that works to tame and control frizz. The hair mask penetrates deep into rebellious, unruly or curly hair to detangle knots and fight flyaways, whilst leaving it more responsive to styling. Hair is smooth, sleek and frizz-free from root to tip.After shampooing, apply a walnut-sized amount of product to the lengths, avoiding the scalp.Genlty massage and leave in 5 minutes.Emulsify and rinse thoroughly.BenefitsLeaves hair manageable.Detangles hair, adding softness.