Cut the banana peels into pieces and place them in a freezer bag.

Mash the banana peels until they are softened.

Put the banana peel mash into a glass jar and add almond oil (olive oil also works).

Seal the jar and put it in a sunny place for 2-3 days. Shake the jar a few times a day. 

Strain the banana peel remains and store the oil in a cool, dark and dry place.