Mosquito bite home remedies: start with a cold compress

Summer evenings would be perfect without the buzzing. By the time you notice, the damage is done and the itching has started, and everything below is about that part: making the next two days bearable without turning a harmless bite into something worse.

Because that is the real risk here, and it is not the mosquito. It is your fingernails. Every remedy on this page is, in one way or another, a way of not scratching.

The ice cube, and it comes first

Wrap an ice cube in a clean cloth and hold it on the bite for 5 to 10 minutes.

Cold numbs the area and settles the swelling straight away, and it does it faster than anything you can spread on. It is the same first gesture as for a wasp sting and for a sunburn, which is not a coincidence: cold is what French grandmothers reached for whenever skin was angry.

Never ice bare on the skin, and take it off if the spot goes numb.

Worth doing at the start of summer: freeze aloe vera gel in an ice cube tray. You get the cold and the aloe in a single object, which is the most useful thing on this page and takes five minutes in June.

Aloe vera gel

Scoop the fresh gel out of an aloe leaf, or use a store-bought gel that is at least 95% aloe. Spread it on the bite, let it dry, and repeat two or three times a day.

Aloe moisturizes while it cools, which is exactly what a bite you are trying not to scratch needs.

One caution from the source. The National Center for Complementary and Integrative Health notes that topical aloe is generally well tolerated, but with “occasional reports of burning, itching, rash, and eczema”. On a patch of skin that is already itching, try a small area first.

Apple cider vinegar

Soak a cotton ball or a compress in raw apple cider vinegar diluted half and half with water, and hold it on the bite for a few minutes. Repeat through the day.

Two conditions on this one. It works best within 30 minutes of the bite, which makes it a remedy for the evening you got bitten rather than the morning after. And only on skin you have not scratched open: vinegar on broken skin stings badly and does no good.

Baking soda paste

Mix 1 teaspoon (5 g) of baking soda with 3 to 5 drops of water to make a thick paste. Spread it on the bite, let it dry for a few minutes, then rinse.

It is in every American kitchen already, it stays where you put it, and it is the version of this page that works at 11 at night with nothing else in the house.

Honey

Dab a little honey straight onto the bite, leave it 30 minutes or longer, then rinse with lukewarm water.

It is sticky and slightly ridiculous, and it has one practical merit that nothing else here matches: a bite covered in honey is a bite you are not scratching. The same jar does duty on a sunburn and in a cough syrup, which tells you how central it was to a French household.

Never on a child under 1 year, here as everywhere else, and never on broken skin.

Plantain leaves

Wash two or three fresh plantain leaves, crumple them lightly to release the sap, and hold them on the bite for a few minutes. A bandage keeps them in place if you want to walk around.

Identify it properly: plantain is the flat lawn weed with parallel-veined leaves, not the banana-like fruit sold in supermarkets. Once you can see it you will find it everywhere, usually within a few steps of wherever you were bitten, which is precisely why it became a remedy at all.

A slice of onion

Cut an onion in half and rub the cut side gently on the bite for 2 or 3 minutes.

It smells, it works on other insect bites too, and it is another example of a remedy built entirely from what was already on the kitchen table.

Spike lavender essential oil

Mix 1 drop of spike lavender essential oil (Lavandula latifolia) with 1 drop of coconut oil, and dab it on the bite two or three times a day.

Not for children under 6, not during pregnancy or breastfeeding, and not for anyone allergic to essential oils.

What we can source, and what we cannot. The NCCIH page on lavender warns that topical lavender products “may cause allergic skin reactions”, and says plainly that “little is known about whether it’s safe to use lavender during pregnancy or while breastfeeding”. That page covers lavender in general and not spike lavender specifically, which is a different species. Test a small patch first, and take this as the traditional remedy it is.

The part that actually matters: stop scratching

A mosquito bite left alone is gone in two or three days. A bite scratched raw is an open wound on skin covered in ordinary bacteria, and that is how the small number of bites that cause real trouble get there.

What helps in practice: keep the cold going, keep something on it so your fingers meet honey or clay instead of skin, cut children’s fingernails short, and cover a bite a child cannot leave alone.

When to see a doctor

Call if the bite looks infected, which usually shows up two or three days later rather than immediately: spreading redness, warmth, increasing pain, swelling that is getting worse rather than better, pus, or a red streak running away from the bite.

Call as well if you develop a fever, a headache and body aches in the days following a lot of bites. That combination has nothing to do with the itching and is worth a phone call rather than a wait.

Call 911 for the signs of a severe reaction. MedlinePlus lists them for bites and stings alike: trouble breathing, wheezing or shortness of breath, swelling anywhere on the face or in the mouth, throat tightness or difficulty swallowing, feeling weak, turning blue. A severe reaction to a mosquito is rare, and it is treated exactly like a severe reaction to a sting, which we set out in full in our wasp sting remedies.

MedlinePlus also has one line for anyone who already knows they react badly to insects: “if you know you have severe allergic reactions to insect bites and stings (such as anaphylaxis), carry an emergency epinephrine kit.”

FAQ

They are all around my ankles. Is it really mosquitoes?

Clusters of small itchy bites low on the legs, and nowhere else, are the classic sign of fleas rather than mosquitoes, especially if there is a cat in the house. The remedies above will still calm the itching, but they will not stop it coming back: that takes treating the animal and the carpet, which is a different job entirely and is covered in our page on natural flea control for cats.

Why does a mosquito bite itch more at night?

Partly because there is nothing else competing for your attention, and partly because you are warm and still under a blanket. The practical answer is the same either way: something cold before bed, something on the skin so your fingers cannot get to it, and short fingernails.

Does apple cider vinegar work on an old bite?

Much less well. It is at its best in the first half hour, which makes it an evening remedy rather than a morning one. On a bite from yesterday, cold, aloe and baking soda are the better bet.

Can I put these on a child’s bites?

Cold, aloe gel, baking soda paste and plantain leaves, yes. Honey only above 1 year, and never on skin that has been scratched open. Spike lavender oil not before 6. The single most useful thing you can do for a child is keep the nails short and cover the bite.