What to put on a burn, and what makes it worse

Butter, toothpaste, ash and ice are still reached for in a hurry. All four fail for the same reason, and it is worth understanding rather than memorising.

A child catches a hot pan handle. Somebody grabs whatever is nearest and puts it on the skin. In a lot of kitchens that is butter, or toothpaste, or ash from the stove, or a handful of ice from the freezer.

All four are wrong, and none of them is wrong by accident. They fail for one shared reason, which is the part actually worth teaching.

A burn does not stop when the heat does

This is the piece almost everyone misses. Pulling your hand away from the pan ends the contact, but it does not end the burning. Heat is now stored in the tissue, and it keeps damaging cells for a while after the pan is long gone.

So the treatment is not to cover the injury. The treatment is to keep taking heat out of it, continuously, for as long as you can.

Why each of the four fails

Butter and oil are insulators. They form a layer that traps the stored heat in exactly the place you need it to leave. Toothpaste does much the same and adds substances to an open wound. Ash adds dirt to broken skin.

Ice is the interesting one, because it looks like it should be right. It is cold, and cold is what you want. But ice is too cold, and applied to already-damaged tissue it causes further injury of its own. Cool is the target, not freezing.

What actually works

Cool running water, for a good long while. It does the one thing the others cannot: it carries heat away continuously and keeps carrying it away for as long as the tap is open. It costs nothing and it is already in the house.

Then cover loosely with something clean, and get medical help for anything large, deep, blistered, or on a face, hand or joint.

The answer

Show the answer

In the puzzle, the wrong move is: smearing butter on the burn.

The other three actions in the case are right. The case works by putting one very old, very popular instruction next to three correct ones, so the child cannot solve it by spotting something odd. They have to ask what each action physically does.

Talking about it afterwards

• "What is the butter actually doing to the heat that is still in there?"
• "Who told you that one? And how would we check whether it is true?"
• "Can you think of another piece of advice everybody repeats that might be wrong the same way?"

The habit underneath this case is the one worth keeping: ask what a remedy physically does, not who recommended it. A piece of advice can be popular, ancient and completely wrong all at once.

General information for parents, not medical advice. For anything specific to your child, ask your doctor.

Cases like this one

• The plant that was loved too much — the part is wrong
• The tap that tingles — the part is wrong
• The turn nobody saw coming — the part is missing

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