This was my first Opatra purchase. I had short hair, very fine and limp and not in the best condition. I had very short hair and started using it hoping it would grow quickly, not really knowing anything about Opatra or red light therapy. Within the first week my hair began to grow, with volume, shine and body which I never had before. Also, the blue light has transformed my scalp, which was always dry and flaky. I used it every day for 15 minutes and is a pleasure to use. One year later...