I purchased 50 units of Xeomin Not through a Groupon but they honored the Groupon price so they did get more money from me then if I had used a Groupon. I have had 50 units before and pretty much had no movement but this time I still had some movement even after the recheck. I am pretty sure they dilute the Xeomin/Botox Because exactly one month later I have FULL range of motion in my forehead and crows feet area like I never had anything done! I DO NOT RECOMMEND!! I Wish I had just paid another hundred dollars and going to a reputable place and actually got real results!!