Brazilian Blowout is a professional hair smoothing brand best known for its signature keratin-based salon treatments that tame frizz, boost shine, and improve manageability—lasting up to 12 weeks . Their at-home line includes Anti-Frizz Shampoo, Conditioner, Ionic Bonding Spray, Deep Conditioning Masque, and more, all designed to extend and enhance the life of the in-salon treatment . The brand prides itself on customizable results (sleek, straight, or defined waves) while strengthening and protecting color-treated hair . However, consumers should note the use of formaldehyde-related compounds in professional formulas has prompted safety discussions and regulations in some regions .