DIY dent removers like this works only on some dents...on some, hindi niya kaya. Especially if the dent is near a ridge. If it's like a dimple on a flat surface, kaya niya. The key to dent removers like this is the glue. It has to be strong enough to stick to the surface while you're trying to pull the dent back, while remaining brittle enough to break off without taking the paint with it if you fail to pull the dent out.