Which type of hair treatment would you use for increasing curls or waves?

Hair perming is the correct choice for increasing curls or waves. This chemical treatment alters the structure of the hair to create curls or enhance the natural wave pattern. During the perming process, the hair is wrapped around rods or rollers, and a chemical solution is applied that breaks and reformulates the disulfide bonds within the hair shaft. By neutralizing these bonds in a curled position, the hair takes on a new texture, resulting in long-lasting curls or waves.

Hair relaxing, on the other hand, is a process that straightens curly or wavy hair, which presents a contrasting outcome to what is desired for increasing curls or waves. Hair coloring involves applying pigments to change the hair's color but does not affect the texture or curl pattern. Deep conditioning treatments primarily focus on moisturizing and repairing hair rather than altering its shape or structure, making them unsuitable for creating curls or waves. Thus, perming is specifically designed to achieve the desired increase in curls or waves.