A keratin treatment is a hair smoothing procedure that helps reduce frizz and enhance shine. It involves applying a keratin-based formula to the hair, which is then sealed in using heat from a flat iron. This treatment can make hair more manageable and can last several weeks, depending on hair type and aftercare. The primary ingredient, keratin, is a natural protein found in hair, skin, and nails. By replenishing this protein, the treatment can improve the overall health and appearance of the hair. Many people choose keratin treatments to achieve a sleek, polished look without daily styling.