Philips Lumea emits flashes only if in contact with the skin. The integrated UV filter protects your skin from UV light. If your skin is too dark, the skin color sensor prevents the emission of flashes.
To get used to Philips Lumea, we recommend that you first make test flashes near the area you are intending to treat and continue with the highest setting that still feels comfortable and does not give side effects.
We recommend that you use Lumea in a well-lit room to protect your eyes from any excessive light.