Undertones refer to the subtle hues beneath the surface of the skin:

Cool undertones: pink, red, or bluish tones.

Warm undertones: yellow, peachy, or golden tones.

Neutral undertones: a mix of warm and cool.

Skin depth refers to how light or dark the skin is.

Understanding both helps match your contour and highlight products more accurately.

How to identify undertone:

Look at your veins:

Blue/purple = cool

Green = warm

Both = neutral

Jewelry test:

Silver looks better? Cool.

Gold looks better? Warm.