As if life wasn’t confusing enough with emoji’s and acronyms – now we have to deal with squares, circles, triangles, lines and dots on the labels of our clothing! However, clothing-care symbols are a code worth knowing.

The American Society for Testing and Materials, ASTM International, put out a standardized set of care symbols with the goal of creating a universally understood “laundry language”.

ASTM symbols follow a simple scheme and a set order: wash (tub shape), bleach (triangle), dry (square), iron (iron) and special care (circle). A circle by itself usually means dry cleaning or wet cleaning. A circle (special care) inside a square (drying) changes “dry” to “tumble dry.”

Adding lines, dots and other marks modify these base symbols and adds info. For example, a large X through a symbol offers a warning, where an empty symbol often means that any version of what the symbol represents is OK to use. A crossed-out triangle means do not bleach, where an empty triangle tells you that any bleach will do. Adding two parallel diagonal lines means to use only non-chlorine/oxygen bleach.

Clear as mud?  Don’t worry, I’ve included a chart to help you decipher what seem to be ancient Egyptian hieroglyphics: