Whole Foods Market has them. Do an online search under essential oil. Bag Balm works. Soak feet in a combo of epsom & sea salts for 10 minutes, massage in bag balm & use cotton socks. Castor oil is another healing thicker oil, also helps arthritic joints, make sure you find the food grade oil by Home Health, not the clear kind used as an emetic internally. Consider adding essential fatty acids to your diet: flaxseed, evening primrose, borage, pumpkin seed, the Omega 3-6-9 blends, or Udo's Blend. Also eat olive oil w/food or organic coconut oil instead of any margarines, or frying oils. Dehydration can show up as a reaction, like an allergy to cleaning fluids on carpets, or sensitivity to nylon, acrylic, wool. Generally, try using natural white cotton socks til they heal & then use sandals or shoes that have a suede lining on the bottom. Avoid synthetic footwear.