Keratin treatments and supplements ... addressing different aspects of hair structure and growth processes. Collagen: Collagen plays a crucial role in maintaining hair structure and elasticity ...

Because keratin treatments are great at amping up shine ... sodium hydroxide to permanently break the bonds inside the hair structure, so that it can be reset and rebuilt straight.

Waking up every morning with hair that looks like it has been professionally styled may seem impossible, but with a high-quality keratin treatment, it becomes an everyday reality. The battle against ...

Kara Jillian Brown is the Beauty Editor of InStyle. She began her career at Well+Good, where she spent five years evolving from Editorial Intern, to News Writer, to Beauty Writer. She earned a ...