Make sure you have selected the setting on your Philips Lumea that feels comfortable based on your skin test. The skin test is necessary to check your skin's reaction to the treatment and to determine the correct light intensity setting for each body area. The recommendations can be found in the skin tone table in the user manual.
Some Philips Lumea models (BRI862, BRI863, BRI864, BRI94, BRI95 series) are equipped with a SmartSkin Sensor. The sensor recommends the setting which was comfortable for most women with a skin tone similar to yours. If the treatment feels uncomfortable with these settings you can always lower them manually.