Asalamu alaykom. I bought makeup highlighter, where in the description on it, it says you can use it on your cupids bow. Cupid is a fake god, but our body part is named after him. (The top line of our lips). Would it be permissible to use this product? And can we also describe that body part by saying cupids bow, or would that be haram? May Allah reward you.

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

It is not forbidden to use this product just because it is used on a part of the body that the disbelievers have given to it a forbidden name. However, it is not correct to keep pace with the disbelievers and follow them in what they name of forbidden names, whether the forbidden names are given to body parts or something else.

Allah knows best.