# Iron, low temperature — Laundry Care Symbol | Launderwise

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Ironing

![Iron, low temperature](/images/care-symbols/iron-low.svg)

# Iron, low temperature

An ISO 3758 iron symbol with one dot, indicating ironing at a low temperature, up to a soleplate of about 110 °C.

## What it means

One dot on the iron caps the heat at the lowest setting. It is used for heat-sensitive fibres — acrylic, nylon, acetate and elastane blends — that scorch, glaze or melt under a hotter plate.

## What to do

Set the iron to its lowest (often marked with one dot, silk or synthetics) and test on an inside seam first. Iron on the reverse, and place a pressing cloth between the iron and any printed or shiny surface.

## How to use this term

Use this ironing symbol before applying heat, steam or pressure to the garment surface.

- Read iron, low temperature with the other symbols on the same care label; the strictest symbol wins.
- Match the instruction to the garment's most fragile part, including trims, lining, prints and finishes.
- If the label, fabric behaviour and stain method disagree, test a hidden area or choose the lower-risk route.

### Common mistake

Do not press over a stain, print, coating or delicate fibre until you know heat is allowed and the mark is gone.

For the broader method, use the [Beginner laundry guide ](/blog/getting-started-laundry/index.md)and then return to this term when the label changes the safe option.

## Related terms

- [Iron, medium temperature](/glossary/iron-medium/index.md)
- [Iron, high temperature](/glossary/iron-high/index.md)
- [Iron without steam](/glossary/iron-no-steam/index.md)

## Sources

- [ISO 3758:2012 Textiles — Care labelling code using symbols ](https://www.iso.org/standard/42918.html)— International Organization for Standardization

[ Back to the full glossary](/glossary/index.md)