Are you a perfectionist when it comes to candle making? I am and some days it seems the wax is against me. Because I'm a perfectionist, I tend to simply melt down the wax and redo the candle. There are, however, ways that you can fix small problems so you don't have to go through all that!
When it comes to beeswax, you have to remember that it contracts quite a bit when it cools. This is something that should be considered when trying to repair your candle. Pouring more wax over a cooled beeswax candle or melting the top with a torch can be disastrous if you are using a mold, or even a container because the wax can flow over the side of the candle, creating a bigger problem.
Fixing a scratch though can be as simple as rubbing a warm finger over it. Even more so if you are working with a textured candle (depending on the texture). Sometimes a scratch or even a small chip can be worked into the design of your candle if worked gently.
Another problem I have sometimes are small pieces of dust, or schmutz as I like to call it, falls onto the surface of the wax after cooling. These little suckers can be vexing because they are determined to stick to the already sticky beeswax. The first thing I try is blowing on it. This sometimes works and sometimes doesn't. If it doesn't, a cold water shower is my next strategy. Be sure you use cold, not hot or warm water. The water pressure will, most times, wash the dust away. If the schmutz is stubborn, rub a finger over it under the running water to encourage it to dislodge. Of course, you then have to let your candle dry for several hours. For me, this isn't a problem since I live in a dry area and water evaporates quickly.
Other repair problems you are having with your candles? Let me know and I will try to help!!