Relaxers are BAD. This is great for extremely coarse hair if you are into having your hair relaxed though. I used to use this relaxer several years ago before I went full blown natural. I have thick 4C type hair. It will get rid of the kinks and leave your hair straight as desired. This is extremely strong though, so you have to be careful not to leave it on too long, especially around your edges. This is not one of those relaxers that you should apply to your hair yourself if you are inexperienced with applying them. You also want to make sure that you use a base protection before applying the relaxer to prevent chemical burns.