cosmetology

/ˌkɒz.məˈtɒləd͡ʒi/

Etymology

From French cosmétologie. By surface analysis, cosmetics + -ology.

noun

The science of cosmetics.
The profession of a cosmetologist or beautician.“While still in high school, Mr. Niami took night classes to get his cosmetology license, then learned how to do special-effects prosthetics for horror films.”