Smoothing treatments are hair care processes designed to reduce frizz and enhance shine, resulting in smoother, more manageable hair. These treatments often use various chemicals or natural ingredients to alter the hair's structure, making it easier to style. Popular options include keratin treatments, Brazilian blowouts, and Japanese straightening. Typically, smoothing treatments can last several weeks to a few months, depending on the method used and individual hair type. While they can significantly improve the appearance of hair, it's essential to follow aftercare instructions to maintain results and minimize damage. Regular maintenance and proper products can help prolong the effects.