why do lotions/aftershave burn after you shave?


Why/how does shaving open pores and things that didn’t sting or burn before you shaved do once you have?

In: Chemistry

The irritation caused from shaving open wounds on the skin & the skin protectant. Then the alcohol in the products causes the burning sensation as it cleans the skin.

When you shave you mildly “injure” your skin – little tears and cuts. The alcohol in the lotion or aftershave then stings just as it would on any cut.

It’s like a lemon in an open cut, except when you shave, you open very tiny cuts. They still hurt when exposed, however.