There are tons of books on how to do this; check out amazon.com. Try a combination of dead sea salt, olive oil and your favorite essential oils for an easy, moisturizing scrub. You can make foot or body soaks easily too. Try a combo of 1 cup Epsom Salt, 1/2 cup Rock Salt, 1/2 cup Dead Sea Salt, 2 tablespoons of Bisodiumcarbonate (Baking Soda) and some essential oils. As for masks, they are more difficult. You can try using a plain yogurt base with essential oil, yogurt is naturally moisturizing. As for clay masks, try checking out your local natural foods and health center, they may have clay base for making these. Good luck, have fun. Making products is how I got into the nail biz!