Works pretty good
This device uses red light therapy to provide relief from pain and promote healing for cold sores, fever blisters and other skin and joint conditions. It can be used on the lips, mouth, nose, ear, knee, feet, hands, and joints. Red light therapy is a non-invasive treatment that uses low-level light to stimulate cell regeneration and reduce inflammation. This is compact and easy to use with a convenient battery-operated design.  It worked well on my blisters and also just on pain in my body.
Rating: 5 stars