Strengthening and repairing: Keratin-based products aim to strengthen and repair damaged hair by replenishing the protein that may have been lost due to various factors like heat styling, chemical treatments, or environmental damage. Smoothing and reducing frizz: These products can help in smoothing out the hair cuticles, reducing frizz, and promoting a sleeker appearance. Keratin fills in the gaps in the hair shaft, making it more resistant to humidity and external aggressors. Enhancing shine and manageability: Keratin-based formulas are often designed to improve hair shine and make it more manageable. They can provide a protective layer that reflects light, resulting in a shinier and healthier-looking mane. Restoring elasticity: If your hair has become brittle and lacks elasticity, keratin-based products may help restore some of the lost elasticity and flexibility, making the hair less prone to breakage.