There are tons of different candle-making instructions online, and here are some tips to make your favorite recipe smell sweeter and burn longer, using all-natural ingredients. Beeswax is one of the best base materials that you can use to make candles, but often results in soft candles. In order to make a harder candle, you can add a small amount of steric acid to your recipe. This will help to improve the candles' firmness and reduces the dripping of the candle when it burns. You can buy steric acid from any candle or craft supply, or you can order it online.