Unlimited Light Treatment Sessions - No activators needed, powered by USB port or portable battery power bank, you can use it as many treatments as you needed, no more extra costs. UV Light Free- This face mask harnesses the power of proven technology to clear acne and allow the skin to heal itself. Easy and Effective Treatment - Suitable for all skin types, lightweight and comfortable. Visible results in as little as 1 week with results improving over time. Auto Treatment Timer - The light mask will shut off automatically at the end of each 10-minute treatment, unless stopped by the user. Goggles attached in for better protection of eyes from the lights Meaning of the wavelength of any colored light: blue light can destroy the bacteria associated with acne, red light penetrates deep into the dermis of the skin, releasing rejuvenating photons. The orange light can improve matte skin.