To simplify life. People used to just use soap to shave. I still do mostly.
A popular brand of ibuprofen in Australia recently came out with packaging that said “Back pain” or “Headaches”. I suppose they figured people with back pain or a headache would buy it since it was more specific and presumably more effective than ordinary ibuprofen sold by competitors. But it was just plain ol’ ibuprofen. The manufacturer got fined $6M dollars for engaging in misleading and deceptive conduct.
I hope the point I’m making is clear.