There are certain ingredients in makeup that reflect the light very strongly. This effect is not visible in daylight but is really visible under flash photography.
This phenomena is known as “flashback”. It’s not the camera, it’s not you; it’s actually your makeup. The dusty, white cast that saturates your complexion in photos is caused by the SPF found in many foundations, concealers, and powders.
SPF is amazing for daytime wear as protection from the sun is debatably the most important thing in a beauty routine. But the same SPF which reflects UV sun beams during the day also reflects the light of a camera’s flash. In turn, you end up flashback, or ghostface.
If you will be in a situation where you will be photographed with flash, you must be sure that you are using photo-friendly makeup. You need to pay attention to your foundation, concealer, illuminating / brightening cosmetics, and all finishing powders