Hair treatments like keratin, smoothing, or hair spa are great for improving the health and appearance of your hair. They help repair damage, reduce frizz, add shine, and make hair smoother, softer, and easier to manage. The process usually involves applying nourishing or protein-based products to the hair, followed by heat or sealing methods to lock in the treatment. To maintain the results, use sulfate-free shampoos, avoid excessive heat styling, protect your hair from the sun and pollution, and keep it hydrated with regular hair masks. Regular trims also help prevent split ends and keep your hair looking fresh and healthy.