Assertion: blue light | /r/CapableOf | reach sebaceous oilglands
Facets:
value: in the skin
type: LOCATION
Source sentences:
text: When blue light reaches the sebaceous (oil) glands in the skin, it can excite compounds produced by acne bacteria called porphyrins.2-4 When excited by light, these porphyrins kill the bacteria.5 Researchers are not sure whether blue light works in other ways as well.