Renew Hair Professional BTX Mask 500g Mask for unruly, frizz and dry hair. Inoar BTX has an advanced formula, with tannic, lactic and hyaluronic acids, plus Argan oil, which reduce the volume of the hair and deeply treat the hair fiber. Inoar BTX restores the mass lost in the chemical processes, seals the cuticles and maintains the results of the treatments for much longer, preserving the softness, the shine and the health of the hair. How to use Wash your hair with a shampoo of your choice (it is not necessary to use a deep cleansing shampoo) and rinse. Remove excess water with the towel and apply the mask evenly over the strands. Comb the strands to align the hair fiber and let it act for 20 to 40 minutes and rinse well. Remove excess water with the towel and brush and flatten the strands to prolong the treatment.