The crossed out triangle

Short answer: A crossed-out triangle means the fabric must not be bleached with any kind of bleach. It is the usual instruction on coloured clothes and on fabrics with elastane. Good alternatives exist for stains, so you do not need bleach.

What the symbol forbids

The crossed-out triangle is a clear ban on all kinds of bleach, both chlorine and oxygen-based. It usually appears on coloured clothes and on fabrics with elastane, which covers most everyday clothing. There is no middle step and no special exception for a few washes. Read the label and take the ban seriously.

Why the ban is there

Bleach attacks dye and elastane first, so it is banned on anything that must hold shape and colour. That applies to a bamboo tank top for men, where colour and elastic matter for look and fit. Once the fibres are weakened, they cannot be rebuilt. The ban therefore protects the life of the garment.

Colour and elastic suffer first

The dye in the fabric turns patchy, and the marks cannot be washed out again. The elastic loses its grip, so waistbands and edges go slack. This happens within a few washes if bleach is used on clothes with the symbol. The change is permanent, so avoid bleach from the very first wash, however small the stain.

Stain removers can hide bleach

Many stain removers contain bleach without saying so clearly, and they fall under the same ban. Read the ingredients before using anything on bamboo sweatpants for men. If you are unsure what a product contains, leave it. A mild liquid detergent is the safer choice, and it copes with most stains.

Using liquid detergent

Rub the stain with a little liquid detergent, let it sit for a quarter of an hour, and then wash as normal. The method is simple and gentle, and it works on most things, also on socks for men. Deal with the stain quickly while it is fresh, and only wash once the detergent has had time to work.

Yellow marks without bleach

Yellow marks come out with an enzyme detergent and soaking time, not with bleach. Soak the garment in water with detergent and follow the temperature on the label. Leave it while the enzymes work, then rinse and wash as usual. Patience gives better results than harsh treatment and protects both colour and fibres.

Oxygen bleach is banned too

The crossed-out triangle bans every kind of bleach, including oxygen-based ones that are usually seen as milder. Do not confuse it with the triangle with two lines, which allows oxygen-based bleach without chlorine. If you see a triangle with a cross over it, there is no exception. Choose detergent without bleach and wash by the label.

Make it a habit

Make it a habit to look for the triangle when you sort laundry. Choose detergent without bleach for coloured clothes, and keep bleach-based stain removers away from anything with the symbol. That way clothes keep colour and shape for longer, and you avoid disappointment when a favourite piece suddenly looks worn after a few washes.

Frequently asked questions

What happens if you bleach anyway

The colour turns patchy and the elastic loses its grip within a few washes. The change is permanent, so it is far better to use liquid detergent and let the stain soak in first.

Does it apply to oxygen-based bleach too

Yes, the crossed-out triangle bans all kinds. Even oxygen-based ones, usually seen as milder, should stay away from clothes with the symbol and from clothes with elastane.

How do you remove yellow marks then

With enzyme detergent and soaking time, not with bleach. Rinse and wash as usual afterwards, and repeat if the mark is not completely gone the first time.