When your skin reacts to new underwear

Short answer: Wash the garment again and try once more. If the reaction is still there, the garment is the cause, and you should stop wearing it. Most often, though, it comes down to residue, fit or detergent.

Wash and try again

A first reaction to new underwear does not mean you cannot tolerate the material. Often it is something in the fabric from the start, or something about the way it sits. Wash the garment once more with a neutral detergent and put it on again. If the reaction disappears, it was most likely residue and not the fabric itself.

First suspect: residue

New clothing can contain residue from dyeing, finishing and shipping. It sits in the fabric even when it looks clean out of the bag. One or two washes remove most of it. So make it a habit to wash new underwear before wearing it. This applies to everything in bamboo underwear for women.

Second suspect: fit

A waistband that is too tight or a seam in the wrong place causes redness that looks like a reaction. Check whether the mark on your skin follows a seam or an elastic. If it does, it is pressure and friction, not the fabric. The solution is a different size or style, for example with a wider waistband. See bamboo panties.

Third suspect: detergent

If you changed detergent at the same time as you got new underwear, that is the most likely cause. Perfume and fabric softener stay in the fabric and sit against your skin all day. Wash with a neutral detergent without perfume, and drop the softener entirely. This applies to everything in women's bamboo clothing, not just the new pieces.

One thing at a time

Test for two weeks, changing one thing at a time. If you change detergent, size and style all at once, you will not know what worked. Note down what you changed and when. It sounds fussy, but it saves time, because you find the real cause faster and can keep everything else.

Look at where it appears

Where on the body the reaction appears tells you a lot. If the redness follows the waistband or leg opening, it points to pressure. If it covers the whole area the fabric touches, it could be residue or detergent. If it is in one spot only, it could be a label or a seam.

Dyes and finishing

It is rare for anyone to react to the bamboo viscose itself. Dyes, finishing and detergent are more common causes. If you reacted to a dark piece but not to a light one, that can be a clue. In that case, try a lighter colour of the same style and see whether it makes a difference.

When the skin does not recover

If the reaction is strong, or your skin does not recover after a few days without the garment, do not keep testing on your own. Then it belongs with a doctor. Talk to your doctor and bring the garment along, so you can look at the material and care label together.

Frequently asked questions

How long should I test for

Two weeks, changing one thing at a time. If you change two things, you will not know what worked, and you are back where you started next time you shop.

Can you react to bamboo viscose itself

It is rare. Dyes, finishing and detergent are more common causes, so start by washing the garment again and switching to a neutral detergent.

When should I see a doctor

With strong reactions, or if your skin does not recover after a few days without the garment. Then stop testing on your own and talk to your doctor.