The best natural bug spray I have found after trying 3 or 4 is Moov Insect repellent. The active ingredient is Melaleuca Oil/Tea tree oil. It does seem to come off straight away once entering water or if any other type of lotion is applied but this would be expected from a natural product.
The scent smells purely like eucalyptus and if you are like me and enjoy the smell you will be fine, although the scent doesn’t really linger on the body.
For information about why I choose natural insect repellent and not mainstream ones, please visit my article.