Freckle
A small flat spot of darker pigment on the skin that usually deepens with sun.
Also: ephelis
Freckles are clusters of skin cells that make more melanin, the pigment that colours skin. They are most common on the cheeks and nose, often darken in summer and fade in winter. A tendency to freckle is strongly inherited and linked in particular to variants of the MC1R gene, which is also tied to red hair. Freckles are found in people of many backgrounds, and in the 2010s some makeup styles began painting them on.