A triangle with two diagonal lines inside or a triangle with CL inside and a cross-through indicates that you should use non-chlorine bleach. The circle is also important.

Depending on what is inside the water on the symbol, you'll need to wash your laundry at different temperatures and washing above the stated temperature (in Celsius) could damage your clothes.

A triangle with two diagonal lines inside or a triangle with CL inside and a cross through both of these symbols indicate that you should use non-chlorine bleach.

One educated Reddit user explained: “These are clothing care symbols. 40 in a tub of water Means Wash at or below 40°C, the triangle Means NO Bleach allowed, Crossed-out circle in a square ...

Look out for five key symbols on clothing care information and you can't go wrong when it comes to washing, drying and ironing items, says our washing machine expert Lifestyle Vikki White Features ...

A triangle with two diagonal lines inside or a triangle with CL inside and a cross-through indicates that you should use non-chlorine bleach. The circle is also important.

These symbols all relate to bleach usage. An empty triangle signifies that the item can be bleached. A triangle with a cross through it means don't bleach this item, reports the Express.

The triangle symbols on clothing items are often overlooked READ MORE: People are only just realising where cashew nuts actually come from: 'We've been lied to for decades' ...