Keratin treatments are hair smoothing procedures that use a protein called keratin to reduce frizz and enhance shine. These treatments work by infusing the hair with keratin, which helps to fill in gaps in the hair cuticle, making it smoother and more manageable. The results can last several weeks, depending on the hair type and aftercare. During a keratin treatment, a stylist typically applies a keratin solution to the hair, followed by heat to seal it in. This process can significantly cut down on styling time and make hair easier to maintain. However, it's important to follow specific aftercare instructions to prolong the effects.