I have only used this 3 times since its arrival. I like it so far but as time goes on I will wait to see what, if any, results are noted. I am not happy with the fit. The attachments for securing it to the neck and face are very big! I think something more adjustable would be helpful. The strap at the top does not seem to attach to anything so am not sure it’s purpose. Again the top strap is too long..