Oral keratin supplements are dietary products containing keratin, a fibrous structural protein that is a key component of hair. These supplements aim to provide the body with additional keratin, which is believed to enhance hair strength, thickness, and overall quality. The rationale behind oral keratin supplements is that by supplying the body with more of this essential protein, it can help reinforce the hair's natural structure, potentially leading to less breakage, improved texture, and increased resilience.

The benefits of oral keratin for hair include promoting healthier and stronger hair by replenishing lost keratin, which can occur due to aging, environmental damage, or over-styling. By boosting keratin levels from within, these supplements may help improve hair elasticity, reduce split ends, and enhance shine. Additionally, they can support the overall health of hair follicles, potentially leading to improved hair growth and reduced hair loss. Oral keratin is important because it addresses hair health at a fundamental level, contributing to both the appearance and integrity of hair over time.