When it comes to choosing the most flattering makeup hues (and especially when finding a concealer or foundation shade), it's important to consider your skin's undertone: are you a warm, cool, or ...

And to do that, you need to know what your skin's undertones are. Luckily, taking a quick look at your veins will solve that problem.

But anyone can have warm undertones, from the fairest of fair to the deepest skin tones. Look at your wrist and compare the color of the veins to a blank, white surface, like a towel, sheet or ...

it is essential to determine whether your skin has warm, cool, or neutral undertones. A simple way to check is by looking at the veins on your wrist: Blue or purple veins indicate a cool undertone.