cosmesis

noun

cos·​me·​sis käz-ˈmē-səs 

plural cosmeses -ˌsēz 

1

: preservation, restoration, or enhancement of physical appearance

café au lait macules themselves require treatment only if cosmesis is requested

—D. L. Stulberg et al.

the improved hip replacement resulted in a quicker recovery and better cosmesis

2

: the outer aesthetic covering (as of silicone) of a limb prosthesis