Hair straightening and smoothing treatments are a popular choice for many people. They are often used to make hair look more manageable and to remove frizz.

There are many different types of treatments available, including chemical treatments, heat-based treatments, and mechanical treatments. Chemical treatments use chemicals such as sodium hydroxide or ammonium thioglycolate to break down the bonds in the hair’s natural curl pattern. Heat-based treatments use heat from a flat iron or other device to straighten the hair. Mechanical treatments use a comb or brush to smooth out the cuticle layer of the hair shaft so that it lays flat against the rest of the strand.