For fine thin hair this booster delivers potent vitamins and minerals to thicken each hair strand and build volume from the inside out instantly boosts structural rigidity to give hair lift and support to be used in conjunction with step 2 deep treatment 1000ml the ultimate treatment range is a 3 step customised healing ritual that restores health and shine to the hair it is designed to be used in conjunction with other in salon services to dramatically improve cutting color and perm resul