Activated charcoal is beloved for its detoxing abilities. This it-ingredient is credited with cleansing skin, whitening teeth and treating acne. Here are some DIY recipes for creating homemade bath bombs and soaps.
This is another good article on getting pine tar out of things other than clothing: hair, off cars, wood decks. For getting pine tar off skin, I do know that tea tree oil works - I have some Melaluca soap from friends in Michigan and I used it all winter heating season to clean up after haulin' and stackin' wood!