KATIVA's PROFESSIONAL BRAZILIAN STRAIGHTENING PRO for Blondes is an effective treatment that is free from formaldehyde, designed specifically for hair straightening. Targeted towards lighter hair types, its unique blend includes Glyoxylic Acid, plant-based Keratin, and Amino Acids to straighten your hair while maintaining its natural structure and delivering hydration. Following the application, your hair will remain smooth, shiny, and beautifully straight with natural movement for as long as 12 weeks.