It is true that with the hair extension you cannot sleep like the way you used to sleep with your natural hair. You must never open your hair wide before sleeping as the hair extensions are prone to get tangled all over. All you have to do is create bun or braid with your hair and then relax and sleep with your hair extensions. This is a very essential technique to keep the hair extensions healthy for a long time. If you don’t follow this step, you hair extensions will not last for long.