Growplex has grown a lot of my hair back, but it has not been 6 months for me rate it at 100% guarantee, but for now it's been good, only had a problem with delivery and have been left for 4 days without Growplex, fortunately I have rosemary so I've been using it so that at least I'm not leaving my hair without a good routine, but be careful to have something to use on your hair when these problems happen, leaving that aside it's been good.