Cosmetology (from Greek, kosmētikos, "skilled in adornment"; and, -logia)'s the study and application of beauty treatment. Branches of specialty including hairstyling, skin care, cosmetics, manicures/pedicures, and electrology. Types of cosmetology Hair stylist A hair stylist specializes in the styling of hair, including cutting and chemical services (such as relaxers, texturizers, perms, and color, as well as restorative treatments). Shampoo technician A shampoo technician shampoos and co… (More on Cosmetology)