Our daughter told us about this. She suffers from chronic back pain and swears by Cryofreeze.
I use it on my sore knees or any sore muscle. It is very effective at giving long lasting relief. Really like this stuff!!
Product works great, just as advertised, however don’t buy from this place. I purchased 2 they only shipped one and it took two weeks of searching for a phone number after three emails with no response to finally speak with someone to resolve the issue.