In these past few years, there has seen a veritable explosion in the number of companies offering all kinds of substances (drugs, supplements) and devices (headgear, home EEG devices, gadgets delivering low doses of transcranial stimulation) to help people have lucid dreams. Although these products are widely marketed and often accompanied by strong claims about their success rates, little independent research has been conducted on their effectiveness. Moreover, there exist many self-training techniques that may give you better results. A clear-eyes look at these technologies for lucid dream induction can be found here in this excellent piece in NY Mag: http://nymag.com/scienceofus/2016/10/these-strange-gadgets-claim-to-teach-you-how-to-lucid-dream.html
If you’d like to learn more about self-training in lucid dreaming, you can read about some of these methods in this research article from our lab.