If you're worried about bad hair extensions, you can be sure they do not. These styles long hair will be woven in solid form, so they stay, but anyway, it does not cause pain. Generally, you will feel a slight tension in your whole head, but that's all. If you feel nothing, then you should talk with professionals to see if there is a problem. In most cases, after wearing hair extensions for two to three days, you will know if they feel right or not.