The basic iron symbol is simply an outline of an iron. This indicates that regular ironing may be needed and can be done using either steam or dry heat.
The following additional marks are often added to specify further ironing guidelines:
Iron symbol with one dot – Iron at a low setting only (less than 110 C or 230 F). Steam or dry heat may be used.
Iron symbol with two dots – Iron at a medium setting (less than 150 C or 300 F). Steam or dry heat may be used.
Iron symbol with three dots – Iron at a high setting (200 C or 390 F). Steam or dry heat may be used.
Iron symbol with an ‘X’ – Garment should not be ironed or steamed.
Iron symbol with two lines and an ‘X’ below it – Regular ironing at the appropriate temperature is acceptable but steam should not be used.
Tip: The basic dry cleaning symbol is a circle. An ‘X’ through the circle means that the garment shouldn’t be dry-cleaned.