Davines NaturalTech Tailoring Controlling Booster 5 enhances the effect of the bases, this booster is best for unruly and frizzy hair. Elderflowers are rich in sugars, which promote coating and protective action on the hair.The extract has been designed to offer an ideal smoothing action for hair that tends to become swollen and difficult to manage. In addition, the flowers also impart nutrients to the hair and help improve hair shine.