Final answer:
Texture services modify hair texture through perms or chemical treatments that can add curls, reduce curliness, or soften tightly coiled hair.
Step-by-step explanation:
Texture services can be used to add curls to straight hair, reduce the curliness of overly curly hair, or soften tightly coiled hair. In these processes, perms may be applied using thermal or chemical means. With chemical perms, chemicals are applied to the hair, which is then wrapped around forms to produce different hairstyles, such as curls. Conversely, the process for chemical straightening or relaxing involves applying the same types of chemicals, but the hair is flattened instead of being curled during the chemical reaction, to reduce curliness or soften the hair texture.