I was diagnosed with breast cancer last year. Because it was the second time I have had this disease, I agreed reluctantly to have chemotherapy. The drugs I was given left my toenails discolored and lifted. It was ugly and embarrassing to me, and summer sandals were not far away! I started to put a drop of Thieves® essential oil under each discolored toenail at night, and within about three weeks, the discolored toenails were back to normal. It was amazing.