✔️ Ease of use: This is a products you'll be using in the home all by yourself, so Dr. Engelman endorses thinking of ease of use and simplicity of Directions when trying to find an at-home red light therapy machine. https://philipxdmn332415.yomoblog.com/36900210/the-fact-about-red-light-therapy-company-that-no-one-is-suggesting