Can I wear makeup during a Red Light Therapy session?

Yes, it is OK to wear makeup during a Red Light Therapy session. Realistically, the makeup could hinder the light from penetrating the skin, but you can compensate with a
slightly longer treatment session. It is more of a concern if the face is being treated and if the makeup has nanoparticles like those found in powder and foundation. Products that offer UV protection without nanoparticles have no effect as they only stop the shortwave UV rays and not red light.