Who cannot use red light therapy?

Yes, certain people should avoid red light therapy entirely or consult a physician before use. Pregnant women, individuals with active cancer or photosensitivity disorders, and people taking photosensitizing medications are the primary groups for whom red light therapy carries meaningful risk.

Red light therapy at wavelengths like 630nm stimulates cellular activity in the dermis, which is beneficial for most users but can be problematic when underlying conditions make light exposure dangerous. People with epilepsy triggered by light, those who have recently used isotretinoin, and anyone with an open wound or active infection at the treatment site should also avoid red light therapy or get medical clearance first. The FDA-cleared indications for red light therapy devices cover wrinkle reduction and mild-to-moderate acne in generally healthy adults — not people with the conditions listed above.

• Photosensitizing medications (tetracyclines, certain antidepressants, NSAIDs) significantly increase red light therapy risk.
• Red light therapy at 630nm is FDA-cleared for healthy adults — not for people with active cancers or photosensitivity disorders.
• Isotretinoin users should wait a minimum of 6 months after stopping the medication before starting light therapy.
• People with lupus or porphyria face elevated adverse reaction risk from any therapeutic light exposure, including red light.
• Direct eye exposure during red light therapy sessions is contraindicated; contoured eye shields are required for facial mask use.