To preface, this product took about 12 business days to arrive, so over 2 weeks. There were issues over at USPS as well where the product was stuck in preshipment as well. Frank also doesn't answer his emails, which I believe is kind of a problem.
That being said, the magnesium spray works well. I use about 16 sprays to equal to get about 300mg of magnesium, rub it in an hour before bed. I had some pretty good sleep so overall the product seems to work I believe. Didn't experience any itch either.