Keratin Booster is a unique and powerful boost spray to enhance any Keratherapy formaldehyde-free keratin treatment, resulting in an even distribution of keratin and amino acids throughout the client’s hair. This professional use leave-in spray ensures uniform curl and volume reduction, frizz control, shine and condition from roots to ends and helps to extend the longevity of the keratin treatment. It can also be used monthly to refresh and restore any previous keratin treatment service.