What Colour Is Nits?

If you spot something small and white in your child’s hair, it could be a nit. Nits are the eggs laid by head lice. They are tiny, about the size of a sesame seed, and they are typically white, yellow, or light brown. The exact colour can change depending on whether the egg is fresh, about to hatch, or already empty.

What Do Nits Look Like in the Hair?

Nits are oval-shaped and very small. They are often mistaken for dandruff or hair product residue at first glance. The key difference is where they sit. Dandruff flakes fall off easily when you brush or shake the hair. Nits are glued firmly to the hair shaft and will not flick off with a fingernail.

They are usually found close to the scalp. Lice lay their eggs at the base of the hair strand, often within a quarter of an inch of the skin. This location keeps the eggs warm so they can develop. As the hair grows, the nits move further down the strand, away from the scalp.

Why Are Some Nits White and Others Brown?

The colour of a nit tells you something about its stage of development. A freshly laid nit often appears darker. It can look light brown or tan because the developing louse inside is still forming. As the embryo matures, the egg may darken slightly before hatching.

Once the louse has hatched, the empty eggshell turns white or clear. This is why you see both colours in the same head of hair. White nits are usually empty shells. Brown or tan nits may still contain a developing louse. This distinction matters when you are trying to decide if an infestation is active.

Finding only white, empty nits far from the scalp may mean the lice are gone or that the eggs are old. Finding brown nits near the scalp suggests live lice may still be present and laying eggs.

Nits vs. Dandruff: How to Tell the Difference

Dandruff is the most common thing people confuse with nits. Both are small and white or light coloured. But they behave differently. Dandruff flakes are irregular in shape and vary in size. Nits are uniform, oval, and have a defined teardrop shape.

Try the pull test. Slide a nit between your thumb and forefinger along the hair shaft. If it moves easily, it is probably dandruff or debris. If it stays stuck in place, it is likely a nit. Lice glue their eggs to the hair with a strong substance that does not dissolve in water or regular shampoo.

Another clue is location. Dandruff appears across the whole scalp and often on the shoulders. Nits are concentrated at the roots, especially behind the ears and at the nape of the neck. These warm areas are where lice prefer to lay eggs.

What Colour Are Live Lice?

Adult head lice are a different colour from their eggs. They are greyish-white to tan. However, their colour changes after they feed. A louse that has just taken a blood meal can appear darker, sometimes reddish-brown. This is because the blood is visible through their semi-transparent body.

Nymphs, which are young lice that have just hatched, are very small and pale. They may be almost transparent at first. They darken slightly as they grow and feed. Because they are so small and move quickly, live lice can be harder to spot than the stationary nits.

How to Check for Nits Properly

You need good light and a fine-toothed comb to check for nits. Natural daylight is best. Sit the person in a chair facing away from you. Part the hair in small sections, about an inch wide, and look closely at the roots.

Pay special attention to the areas behind the ears and at the back of the neck. These are the warmest parts of the scalp and the most common places for lice to lay eggs. Use the comb to pull through each section from root to tip. Wipe the comb on a white paper towel so you can see what comes out.

A dedicated nit comb has teeth spaced close together, usually less than a millimetre apart. This spacing catches both nits and live lice. Regular combs do not work because the teeth are too far apart.

What to Do If You Find Nits

Finding nits means the person has been exposed to head lice. It does not mean they are dirty or unhygienic. Lice do not discriminate. They spread through direct head-to-head contact, which is common among school-aged children.

Treatment involves two steps. First, remove the nits and lice with a fine-toothed comb. Second, use a treatment product recommended by a pharmacist or doctor. Wet the hair and apply conditioner before combing. This makes the hair slippery and easier to comb through.

You will need to repeat the combing process. One session is rarely enough. Check the hair again after a few days and remove any nits you missed. The timing of repeat treatments depends on the product you use, so follow the instructions on the packaging or ask a pharmacist.

Washing bedding and clothing in hot water can help, but it is not the main way lice spread. Lice cannot survive away from the scalp for more than a day or two. They need human blood to live. Focus your effort on the hair, not the house.

Can You See Nits Without a Magnifying Glass?

Yes, most people can see nits with the naked eye. They are small but visible. If you have good vision and good light, you can spot them. A magnifying glass can help confirm what you are seeing, but it is not required.

What makes them hard to find is not their size but their colour. White nits blend in with blonde or light brown hair. Darker nits may be harder to see on very dark hair. This is why combing is more reliable than just looking. The comb catches the nits and brings them out where you can see them clearly.