Features : Made for all types of hair. Formaldehyde-free. The innovative Nutri Keratin Complex gurantees satisfactory results on straightness and a smooth, silky and shinny hair. Eliminates frizz. A perfect cosmetic and durable result, for up to two month, depending on hair type. Without any odor, can apply without wearing gloves, ZERO harm to hand and scalp. After using can do hair coloring and hair perm directly.