How to choose a red nail polish for your undertone

Red is the one polish colour almost everyone owns and the one most people get slightly wrong. Two women can wear the same bottle and one hand looks alive while the other looks dull. The difference is not the depth of their skin. It is the undertone, the warm or cool cast under the surface, and the red either agrees with it or argues with it.

The rule is short. Blue-based reds for cool undertones, orange-based reds for warm undertones, a true red for neutral. Finding your undertone takes two minutes and a window, and once you know it, every red in a shop sorts itself into yes and no.

What is an undertone and why does it decide the red?

An undertone is the colour cast beneath the surface of the skin that stays the same when the skin tans, flushes or pales. It is warm (golden, peach, yellow), cool (pink, rosy, bluish) or neutral (a balance of both), as Manucurist describes it. Surface tone is how light or deep the skin is; undertone is separate from it. A fair woman can be warm and a deep-skinned woman can be cool.

Red polish is never a pure red. Every red is mixed with a little blue or a little orange, and that lean is what the eye reads against the hand. A blue-leaning red next to warm skin makes the skin look sallow. An orange-leaning red next to cool skin makes the skin look pink and the red look brassy. A red that shares the skin's lean makes both look cleaner.

Undertone matters more than skin depth for red. Dazzle Dry's guide puts the same point in one line: the appearance of a red shade varies with the wearer's skin, which is why the same bottle reads differently on two hands, per Dazzle Dry.

How do you test your undertone at home?

Three quick checks, done in daylight, give a reliable answer. Do them near a window, with no coloured light and no fake tan on the hands.

You will need

• Daylight from a window
• One silver and one gold piece of jewellery, or a silver and a gold foil sweet wrapper
• A plain white towel or shirt
• A red lipstick you already love wearing

Steps

1. Turn the inner wrist to the light and look at the veins. Blue or purple veins point to a cool undertone, green veins to a warm one, and a mix of both to neutral, per L'Oréal Paris.
2. Lay the silver and the gold against the back of the hand. Silver makes cool skin look clearer and brighter; gold gives warm skin a healthy glow. If both look fine, you are neutral.
3. Hold the white towel under the chin. Skin that looks rosy against pure white is cool; skin that looks golden or yellow is warm.
4. Check the red lipstick you reach for most. If it is a cherry or raspberry, your instinct is already cool; if it is a coral or tomato, it is warm. Match the polish to the lipstick lean.

One test can mislead. Veins vary with skin thickness and temperature, and some people have no clear preference in jewellery. Take the answer that two of the three checks agree on.

Which red suits a cool undertone?

A cool undertone suits a red with blue in it. Cherry, raspberry, cranberry, ruby and burgundy all belong here. Celebrity manicurist Deborah Lippmann tells Who What Wear that cooler-toned people should choose blue-based reds, with burgundy as the deep option. On fair cool skin a blue-red gives the sharpest, most classic contrast and makes the skin look porcelain.

The signs of a blue-red in the bottle are a slight purple or pink cast when the polish is held against white paper. Classic examples are Chanel Le Vernis in Pirate, Essie in Forever Yummy and the cool cherry family that returned in 2025 as deep cherry red. A blue-red also makes teeth look whiter when the hand is near the face, which is why it is the usual choice for evening.

Rouge Anaïs by India Anaïs is a cherry crème with a cool blue heart, built to flatter warm and cool skin alike; the edition is sold out and the next is planned for spring 2027.

Which red suits a warm undertone?

A warm undertone suits a red with orange or yellow in it. Tomato, poppy, coral red, vermilion and brick are the family. ella+mila describes coral reds as a blend of orange and red that suits warm skin, and lists brick reds as the deeper, muted member of the same group, per ella+mila. On medium and tan warm skin, a tomato or brick red makes the skin look more golden and more bronzed.

In the bottle, a warm red looks slightly orange against white paper. Manucurist's Poppy Red, with its orange cast, is the brand's own pick for sun-kissed skin in summer, and earthy reds such as terracotta and brick are its picks for medium to deeper warm skin, per Manucurist.

Warm reds show wear slightly less than blue-reds because a chip at the tip reads as a soft edge, not a dark line. They are the practical red for hands that type and cook.

Which red suits a neutral undertone or olive skin?

A neutral undertone can wear a true red, a balanced hue that leans neither blue nor orange. Lippmann's rule is that neutral tones have the best of both worlds. Big Apple Red by OPI and a classic pillar-box red are the usual references. Neutral skin can also borrow from both families, so a cherry on Monday and a poppy on Friday both work.

Olive skin needs its own note. It has a green-grey base that shifts warm or cool with the light. Warm reds such as brick, tomato and poppy pick up the gold in olive skin and flatter it. Pure blue-reds can amplify the green and go flat, so a cool-leaning olive should choose cherry or wine, which have depth as well as blue, per Mirellé Inspo.

Deep skin wears the full range. The idea that deep skin should only wear dark reds is a myth. A bright cool red on cool deep skin and a rich warm red on warm deep skin both look intentional; the undertone, not the depth, decides.

Which red family for which hand?

Depth changes the intensity, not the lean. Fair skin can take a bright red because the contrast is the point. Medium skin needs a little more pigment so the red does not disappear. Deep skin can take the most saturated version of its family and also the darkest, from oxblood to near-black wine.

How do you wear red so it looks polished?

Red pigment stains. Reds, especially blue-reds, soak into the porous nail plate and leave a pink or yellow cast after removal. A base coat blocks this, so a red manicure always starts with one, per Manucurist. Two thin colour coats give a full crème red; one coat looks patchy and three looks thick.

Red shows every flaw at the cuticle line. Clean the edges with a small flat brush dipped in remover before the top coat goes on. Cap the free edge with each coat so the tip does not chip into a white line, which reads as wear faster on red than on any other colour.

Keep the top coat fresh every 2 to 3 days. A red that has lost its gloss looks older than it is; a glossy red looks new until the day it comes off.

“The best red polishes for a warmer skin tone would be vibrant reds”

Deborah Lippmann, Celebrity manicurist and founder of Deborah Lippmann, in Who What Wear