It depends on what kind of skin you have.

If you have sensitive skin, then yes, fish oil can penetrate your skin.

Oil based sunscreens can clog pores within the skin, and cause extensive burning of the skin. Using oil free sunscreen is a healthier alternative for you and your skin.

Olive oil will not cure peeling skin. Try Coconut oil. It is all natural and heals most skin problems.

Actually peppermint oil won't hurt the skin(unless you have very sensitive skin), people use peppermint oil in spas so you should be okay if a little peppermint oil gets on your skin or you could simply wash it off.

Avacado oil.