Chemical hair styling involves the use of various chemical products to alter the structure of hair. This process can include treatments like permanents, which create curls or waves, and relaxers, which straighten curly hair. These chemicals work by breaking and reforming the bonds in the hair shaft, allowing for a new shape or texture. Another common method is hair coloring, which changes the hair's color using dyes and bleaches. Chemical hair styling can provide long-lasting results, but it may also lead to damage if not done properly. It's essential to follow up with proper hair care to maintain hair health after these treatments.