IPA: //ˈæftərˌʃeɪv//
KK: /ˈæftərˌʃeɪv/
A product applied to the skin after shaving, often in the form of a lotion or gel, which may have a pleasant scent and helps soothe the skin.
He applied aftershave to soothe his skin after shaving.
Aftershave is formed from "after" (from Old English "æfter", meaning following in time) and "shave" (from Old English "sceafan", meaning to cut off hair). The word refers to a product applied to the skin after shaving to soothe or protect it.
Think of applying something 'after' you 'cut off hair' — that's what aftershave is for.
No commonly confused words.