I hadn't heard of it and just looked it up, I wasn't able to find any reviews, I did find another cream and it includes Maca it's called Mo - Butta (?)
http://www.amazon.com/Mo-Butta-Cream-Booty-Enlargement/dp/B00556JOEW/ref=cm_cr_pr_pb_t
All the reviews seem positive but of course I wouldn't be so sure of ho true this is and if these are actual users of the cream.
I opted for injections, exercise is great too.