What it is: A must-have daily maintenance spray with 25 natural keratin.What it does: PerfectRenew Daily Keratin Replenishing Spray is a must-have enhancer that delivers the daily dose of keratin your hair needs for health and radiance. It detangles, tames frizz, and defends your hair (and hair color) from the drying effects of styling, humidity, and the elements, while UV protectant technology guards against color fade. Spray on hair daily before styling to reactivate keratin levels and create the perfect canvas for all-day smoothing and frizz control, or carry it with you for on-the-go shine.What else you need to know:Keratin, a natural protein found in healthy hair, is constantly depleted due to heat styling and environmental damage. This can cause frizz, breakage, and dullness. KeratinPerfect features exclusive ReBonding Technology, which fills in rough spots and replenishes lost keratin, replacing frizzy, uneven texture with a protective shield around the hair shaft that radiates shine and health. The KeratinPerfect system is a long-lasting, salon-quality smoothing system, and not a straightening treatment that breaks the hair's bonds and causes damage. In fact, the benefits of this system are cumulative: Your hair will continue to improve with each treatment and will be smooth, shiny, manageable, and frizz-free without a lot of time and effort.KeratinPerfect does not include formaldehyde as a formulating ingredient. Rigorous tests were conducted by the company to ensure that the KeratinPerfect products meet and/or exceed cosmetic formulating guidelines.