It's best to burn soy candles for at least 2 hours the first time to reach a full "wax pool." This will ensure even burning in the future. Soy candles and wax melts are subject to "frosting" and "wet spots" however they in no way affect the burnability (made up word) of the product. I choose to not use stabilizers or other toxic additives in my handmade creations so these minor blemishes may occur from time to time. Rest assured that my products are made with the highest quality ingredients to keep you and your home safe.