Weaving in cosmetology generally refers to:

Weaving in cosmetology specifically refers to a method to attach hair extensions. This technique involves integrating human or synthetic hair into the client's natural hair to enhance length and volume, or to add a splash of color without damaging the natural hair. During this process, sections of the natural hair are often braided or secured in a way that allows the extensions to blend seamlessly, creating a natural look. This method has become popular due to its versatility and the variety of styles it offers, making it a preferred choice for clients looking to change their hairstyle.

The other options do not accurately reflect what weaving is. Cutting hair focuses on the styling aspect rather than extension application. Dyeing hair deals with changing the color of natural hair, which is distinct from adding additional hair. Perming hair involves altering the hair's texture by creating curls or waves, further differentiating it from the weaving process.