What Do Laundry Symbols on Care Labels Mean?

A care label sticks out of the side seam with five pictograms you half recognise. Every laundry symbol comes down to five base shapes: a tub means washing, a triangle bleaching, a square drying, an iron pressing, a circle professional cleaning. The rest is dots, bars and crosses.

What do the symbols on care labels mean?

The pictogram system is based on the ISO 3758 standard and is identical across the European Union, so a label from Portugal means exactly what a label from Poland means. The order of the symbols is fixed too: washing, bleaching, drying, ironing, professional cleaning.

Three modifiers change the meaning of every base shape. A cross over a symbol forbids that action. A bar underneath means a gentle programme, two bars a very gentle one. Dots inside the symbol set the temperature, where one dot is the lowest permitted value for that action and three dots the highest.

There is one more rule worth knowing that does not follow from the pictograms themselves. A label states the maximum permitted load, not the recommended one. A symbol allowing 40 degrees does not mean the piece has to be washed at forty, only that above that point the manufacturer takes no responsibility for the result.

How do you read the washing symbols?

A tub of water is the washing symbol, and everything inside it and beneath it narrows how that washing should be done. With no additional marking, the tub allows machine washing on any programme.

The last two rows are confused most often. A tub with a hand permits contact with water and suits washing in a basin at home, while a crossed out tub forbids water entirely, including damping a stain. You will find that second symbol mainly on bonded pieces, on anything with a filling, and on linings made from a different fibre than the shell. The tub with a hand, meanwhile, appears as standard across sweaters with a long pile.

What do the drying symbols mean?

A square covers drying, and what sits inside it separates natural drying from a tumble dryer. A square with a circle inside refers to the dryer only.

The dry flat symbol is the one most often ignored, and skipping it costs the most. Wet knit weighs two to three times more than dry, so hung on a hanger it lengthens across the shoulders by several centimetres and never returns to its original length. The same rule applies to every piece from hoodies, whatever the thickness of the stitch.

How do you read the ironing symbols?

An iron means pressing, and the number of dots inside it corresponds to the maximum plate temperature. One dot is around 110 degrees, two around 150, three around 200.

• One dot. Polyester, acrylic, nylon and silk, always through a cotton cloth and without steam.
• Two dots. Wool, viscose and blends, with steam and preferably from the reverse side.
• Three dots. Cotton and linen, full power, steam recommended, pressing on slightly damp fabric.
• Iron crossed out. No pressing at all, usually with prints, coated fabrics and heat set pleats.

A separate mark is an iron with the steam lines beneath it crossed out, meaning no steam pressing while dry pressing is allowed. You will meet it on fabrics that change shade on contact with steam. Well pressed viscose recovers a matte sheen in daylight and falls softly in movement instead of breaking into hard creases, which is why pieces from dresses in that fibre are best kept to two dots and pressed from the reverse.

What does the circle on a label mean?

A circle covers professional cleaning, and the letter inside it tells the cleaner which solvent to use. That symbol is addressed to the workshop rather than to you, and on its own it does not forbid home washing, as long as the tub beside it is not crossed out.

The letter P means cleaning with perchloroethylene, the standard method available at any cleaner. The letter F indicates hydrocarbons and applies to more delicate fabrics. A W in the circle means wet cleaning, a gentler method than classic chemistry and a good one for wool and cashmere. A crossed out circle forbids professional cleaning entirely. A bar under the circle, exactly as under the tub, means a gentle process.

The triangle, the last of the five base shapes, covers bleaching. An empty triangle allows any bleach, a triangle with two diagonal lines permits only chlorine free products, and a crossed out triangle forbids bleaching altogether. You will find the last one on most dyed pieces and on anything containing elastane.

How often should different pieces be washed?

Washing frequency depends on how much of the fabric touches the skin directly rather than on how many hours the piece was worn. The smaller the contact, the less often it needs washing.

Underwear and socks go in after every wearing, because contact is total. Pieces from t-shirts and tops worn next to the skin last one to two wearings. Shirts worn over a top last three to four, provided there is no visible soiling at the collar or under the arms. Knitwear worn over a middle layer only needs washing once every five to eight wearings. Trousers and pieces from skirts, denim aside, take four to six wearings.

Denim is a separate case here and needs washing least often of anything. Manufacturers suggest intervals from ten wearings upwards, because every wash weakens the dye and the cotton fibre at the fold lines. Between washes it is enough to air the piece overnight and lift spot marks with a damp cloth. The same principle applies to dense woven fabrics worn over a thin under layer.

What not to do against the label

Four departures from the markings end in damage that cannot be reversed rather than simply a poorer result.

• Do not exceed the temperature on the tub even by ten degrees, because wool starts shrinking precisely at that point and the process happens only once.
• Avoid spinning where the symbol carries two bars, because it is not the speed of rotation but the centrifugal force that permanently mats the fibres of a knit.
• Never tumble dry anything marked with a crossed out circle, because hot air shrinks natural fibres faster than hot water does.
• Do not use bleach where the triangle is crossed out, not even on a single spot, because chlorine lightens the dye around the stain and leaves a permanent pale ring.

How do you wash something with no label?

With no label the decision rests on the composition, recognised by touch and appearance, and in case of doubt on the most cautious programme possible. The safety rule reads: 30 degrees, delicate programme, spin up to 600, dry flat.

Natural fibres give themselves away by behaviour. Cotton creases and absorbs water immediately, linen creases more strongly and shows visible irregularities in the weave, wool springs back after being squeezed in the hand, silk feels cool and warms to the hand within seconds. Synthetic fibres stay cool, do not absorb water and return to shape without creasing.

With plain cotton pieces such as most shirts, the risk is small and a standard 30 degree wash is enough. Blends call for caution, because the programme is always decided by the most sensitive fibre, even if it makes up only fifteen percent of the composition. With pieces from denim there is one more factor, the indigo dye, which bleeds through the first three to five washes and colours everything sharing the drum.

What do you do when the label is illegible or cut off?

Check the manufacturer's site by model name or look for a second label, because in many pieces the composition is sewn in separately at the lower seam. If you find nothing, treat the piece as wool: 30 degrees, delicate programme, dry flat.

Are laundry symbols the same outside Europe?

Not entirely. The United States uses its own system with additional pictograms, and Japan introduced a standard in 2016 with numbers beside the tub instead of dots. Pieces imported from outside the Union may carry both labels at once.

Is washing at a lower temperature than the label safe?

Always, because the label gives a maximum value. The only cost is weaker performance on greasy stains and on odours, so in those situations it is better to extend the programme than to raise the temperature.

How do you wash linen so it does not shrink?

At 30 degrees, on a delicate programme, with a spin up to 600 and taken out of the drum as soon as it finishes. Linen shrinks mainly in the first wash and in high heat drying, which is why pieces from linen and muslin are best dried in air, in the shade.

Back to that label with five pictograms. Five base shapes and three modifiers are enough to read any of them without checking. If you were to remember only one symbol, make it the square with a horizontal bar, because that is the one protecting against the single kind of damage that cannot be repaired afterwards.