Brush Let Me Be without single step formaldehyde was developed with a new technology capable of restoring and preventing the aging of the hair strand in a single application step, in addition to dispensing the prewash. For being organic 0% formaldehyde does not cause any nuisance does not have smell and neither does the eyes burn. Application : Divide the hair into four parts. Starting at the nape of the neck, apply the product across the length of the hair, wick to wick with a brush and comb. Wait approximately 40 minutes, depending on the thickness and degree of porosity of the yarn. Rinse and extract from 30% to 40% of the product.Stain 100% hair strand only with the dryer and hands (without the use of a brush). Wrap thin wicks 10 to 15 times with the board at 230oC. Rinse the hair and apply a conditioner or moisturizing mask. Result : Promotes softness and restoration to hair strand, reducing volume and eliminating frizz.