no expiration. Glow ReJuvalight is a 20-minute session inside red light capsule. Rejuvalight is a self-serviced appointment, the client has no direct contact with our staff. We absolutely love this holistic healing treatment and hope that everyone can add light therapy to their regular wellness routine; our body thrives with light. Red light contains no UVA or UVB: the wavelength of 633-680nm delivers energy to our cells to stimulate regeneration and repair. Great therapy for arthritis, pain, tension, low energy, insomnia, eczema, and all inflammatory conditions. During the session, you can choose to play relaxing music or guided meditation.