The first thing most people get stuck on when choosing makeup is: "am I warm-toned or cool-toned?" Unlike depth (how light or dark your skin is), undertone is the color running underneath your skin, which makes it easy to misjudge just by looking. Fortunately, there are a few ways to get a good read on it at home without any tools.

Check your wrist vein color

Look at the veins on the inside of your wrist in natural light. If they lean green, you're likely warm-toned; if they lean blue or purple, you're likely cool-toned. If it's hard to tell and the colors seem mixed, you may have a neutral undertone. Lighting can throw this off quite a bit, so treat it as one data point rather than the final word.

The jewelry test

Holding gold and silver jewelry up to your face is another widely used method. If gold makes your skin look brighter and healthier, you're likely warm-toned; if silver makes it look clearer and crisper, you're likely cool-toned. If both look equally good on you, you may have a neutral undertone.

The white-paper contrast test

Hold a plain white sheet of paper or a white t-shirt up near your face and look in a mirror. If your skin looks more yellow or peachy by comparison, that points to warm; if it looks more pink, red, or blue, that points to cool. This test is most accurate in natural daylight — fluorescent or warm indoor lighting can distort the result.

How your skin reacts to the sun

If your skin tends to burn easily and rarely tans, that often points to a cooler undertone; if it tans easily without much burning, that often points to a warmer one. This isn't a hard rule on its own, so it's best used alongside the other tests.

Why undertone matters

Knowing your undertone makes a big difference when picking a cushion foundation or base shade — far fewer mismatches. A warm-toned person wearing a pink-leaning cool cushion can end up looking pale or dull, and vice versa. Lip color reacts the same way: the same shade can look completely different depending on your undertone — coral tones tend to suit warm undertones especially well, while berry and rose tones tend to suit cool undertones.