adapalene
noun
adap·a·lene
| \ ə-ˈdap-ə-ˌlēn
\
\
Medical Definition of adapalene
: a retinoid C28H28O3 applied topically to the skin in the treatment of acne vulgaris
Note: Adapalene is marketed under the trademark Differin and when used in combination with benzoyl peroxide, under the trademark Epiduo.