The oils in this unique hair therapy should not be heated above 110 degrees, so we recommend NOT using a microwave. Heating can be done simply by putting the bottle in glass of warm water for a short period of time. Actually, heating isn't essential for obtaining the benefits. We suggest simply massaging a small amount onto a freshly washed scalp, pulling the oils out onto ends of hair shaft and then wrapping the head with a warm bath towel and leaving on for as long as overnight, but no less than one hour. Wash out with regular shampoo. You will see a new shine and luster.