What Is an Undertone?
Your skin has two layers of colour: the surface tone (which can change with sun exposure, seasons, or health) and the undertone — a more stable, subtle hue beneath the surface that stays constant throughout your life. Understanding your undertone is one of the most useful things you can do for your makeup, because it affects which foundation shades, blushes, lip colours, and even eyeshadow palettes work best on you.
The Three Undertone Categories
- Warm: Yellow, peachy, or golden hues beneath the skin. You tend to look better in gold jewellery and earth tones.
- Cool: Pink, red, or bluish hues beneath the skin. Silver jewellery and jewel tones tend to complement you.
- Neutral: A mix of warm and cool — you can pull off both gold and silver, and most colours suit you well.
It's worth noting: undertone is completely separate from skin depth (light, medium, deep). Someone with very deep skin can have a cool undertone; someone with very fair skin can have a warm one.
How to Find Your Undertone at Home
The Vein Test
Look at the inside of your wrist in natural light. If your veins appear:
- Blue or purple → cool undertone
- Green → warm undertone
- Blue-green or a mix → neutral undertone
The White Paper Test
Hold a plain white piece of paper next to your bare face in natural light. Does your skin look more pink/rosy against the white (cool), yellowish or golden (warm), or does it look fairly neutral without a strong cast?
The Sun Test
How does your skin react to sun exposure?
- Burns easily, rarely tans: Likely cool
- Tans easily, rarely burns: Likely warm
- Sometimes burns, then tans: Possibly neutral
The Jewellery Test
Try on a piece of gold jewellery and a piece of silver jewellery. Whichever one makes your skin look more alive, brighter, and healthier is generally a sign of your undertone — gold suits warm, silver suits cool.
How Undertone Affects Your Makeup Choices
| Product | Warm Undertone | Cool Undertone | Neutral |
|---|---|---|---|
| Foundation | Look for Y (yellow) or W (warm) in the shade name | Look for P (pink) or C (cool) | Look for N (neutral) |
| Blush | Peach, coral, terracotta | Rose, berry, mauve | Soft pink, soft peach |
| Lip colour | Nude-peach, warm reds, brick tones | Cool reds, berries, mauves | Most shades work |
| Highlighter | Gold, champagne, bronze | Silver, icy pink, pearl | Both work |
What If You Can't Decide?
Many people fall somewhere between categories, or find that different tests give slightly different results. If that's you, you're probably neutral — and that's actually the most flexible undertone to have. When shopping for foundation, look for shades marked "N" and you'll generally be in good shape.
The Payoff
Once you know your undertone, shopping for makeup becomes so much more efficient. You'll stop buying foundations that look grey or orange on your skin, blushes that look muddy, or lip colours that wash you out. It's one of those small pieces of knowledge that quietly transforms your entire makeup experience.