What is the lowest setting on an iron?

The lowest setting on an iron is generally labeled as "synthetic" or "delicate". This setting is designed to be used on fabrics that are sensitive to heat, such as silk, spandex, or some types of polyester. The temperature on this setting is typically around 250°F (120°C) and it allows the iron to glide over the fabric without causing any damage or burning. It is important to note that some fabrics may require an even lower setting, or may need to be ironed with a cloth or ironing sheet to protect them from heat. Always check the care instructions on the garment before ironing and test a small, inconspicuous area first.