"To fully enjoy your SOJA&Co. candle, we recommend that you burn your candle for 1 to 2 hours the first time you light it. Why? Soy wax has a good memory! Therefore, if your candle is extinguished before allowing a complete melt (the soy wax has melted all the way through the middle of the jar), all future uses will not exceed the diameter of the "first time" use, leading to a deep hole in the wax and hours of lost burning time. Also, always keep the wick trimmed to about 1/4" prior to lighting it" - SOJA&Co.