Decorative Oil Lamp Candle Set of 4 Product Dimensions: 10 x 4 cm / 4 X 50 ml Our product contains natural plants. You can use it for a long time with its refillable structure. Preparation for Use: Open the kraft paper on the oil lamp. Carefully remove the oil lamp stopper. Place the long part of the wick passing through the wick head at the bottom of the oil lamp. The knotted part of the wick remaining on the wick head, 2 mm between the wick head and the knot. Cut it open and light the wick. Due to the nature of oil lamps, if you leave the wick length too long, they will soot. To avoid soot problems, you should leave the wick length as short as possible.