Assertion: redhead | /r/HasAspect | less melanin
Facets:
Source sentences:
text: Upsides and downsides: Redheads have less melanin, which means they burn faster — but they also make vitamin D faster
text: But while it's true that redheads have less melanin — meaning they're more likely to burn — missing that pigment also has an upside: Because they absorb more sunlight, redheads also produce more vitamin D.