FAQ

Technical Questions About PHOS Masks

For questions about results, pricing, and guarantees, visit our main FAQ. The questions below cover clinical specifications and technical details.

What is the irradiance of the mask? PHOS devices deliver 44 mW/cm² in blue light mode and 30 mW/cm² in red and near-infrared modes. For context, these output levels fall within the parameters used in peer-reviewed photobiomodulation research for a meaningful clinical response — not the underpowered numbers common in most consumer devices.

Are the wavelengths verified? Each device uses dual-chip LEDs designed to emit light in the 415nm (Blue), 630nm (Red), and 830nm (Near-Infrared) ranges. Wavelength accuracy is verified before each unit ships. This is not a mass-manufactured product — every device that leaves our facility has been individually tested.

Can I use this with my skincare routine? Yes. For best results, use PHOS on clean, dry skin before applying serums or moisturizers. The treatment can enhance the absorption of your follow-up skincare, amplifying the results of your routine rather than replacing it. A simple sequence: cleanse → PHOS session → serums and moisturizer.

Is it eye-safe? Yes. The device includes integrated eye protection and delivers zero UV light. We still recommend keeping your eyes closed during the session for maximum comfort, as the visible red light can be bright at close range.

How does PHOS relate to clinical research? PHOS is engineered around the same wavelength parameters studied in peer-reviewed photobiomodulation research. It is not a substitute for in-office dermatological procedures, but it delivers consistent, research-aligned light therapy that supports ongoing skin health between professional treatments — or as a complete standalone routine. Visit our Science page to read the specific studies our device parameters are built around.

Can I use my HSA/FSA for this? Yes — for US customers, PHOS devices qualify as an eligible medical expense under most Health Savings Accounts (HSA) and Flexible Spending Accounts (FSA), given their targeted treatment for acne (415nm) and inflammation (830nm). Using pre-tax dollars effectively gives you approximately a 30% invisible discount on your purchase. Check with your plan provider to confirm eligibility, as plan rules vary.