Wax tubs are round tubs containing fragranced soy wax. They are a smaller alternative to our clamshells. The fragrance is released by melting the wax in a wax burner (candle lit or electronic, whichever you prefer). Simply snap off a piece of wax (or cut with a knife) and place into your wax burner. We do not recommend you use the whole tub of wax in one go as it may overspill in your burner. A bigger piece of wax will not give you a stronger fragrance, using a small piece will smell just as strong as a bigger piece.