Sekonic Flashmate L-308X
This light meter measures the amount of light falling upon someone or something. The metering is not affected by the surface itself as it is only measuring the light going towards the surface and additionally is not measuring the light bouncing off the surface.
Additionally, you may wish to know what light is bouncing off a cheekbone in which case, you will point the meter dome towards the cheekbone. (AKA the Zygomatic bone).