White clothing in particular is vulnerable to going grey or yellow over time?

The white cloths didn't mixing with any other colour.

White clothing in particular is vulnerable to going grey or yellow over time. This can be caused by a number of things. The most common is mixing your whites and colors. Even if you do not have many white clothes, make a point of washing them separately. Also, make sure you are using enough detergent, as not putting enough in can lead to residue remaining in the load. Try washing your clothes at a higher temperature also, as this will help to eliminate grey and yellow staining.

I have been a lover of slouchy beanie for several seasons now and can share my experience, these hats are distinguished by their loose fit and cozy look, suitable for everyday use and when choosing, it is worth paying attention to the material: wool and acrylic provide good thermal insulation, while cotton is suitable for cooler conditions.