Yes, no excuses! Those socks must be inferior products.
They may be woven from short fur cotton. Their fiber length is only about 2-3mm, and very rough, like many soft needles, making your skin itchy. In terms of raw materials, they should have been used to make canvas, shoes, or rope, completely unsuitable for thigh high socks. Kayhoma thigh high socks are all woven from underwear-grade combed cotton, with a fiber length of more than 6mm, all of them are very soft.
They may also be due to substandard dyes. Some thigh high socks are very easy to discolor. They can even leave the color on your thighs and make your skin itchy. Never wash them by washing machine, they will decolor and completely discolor the water in the washing machine. If you wash them with your clothes, these colors may also adhere to other clothes. Kayhoma thigh high socks use the same grade of dyeing materials as children's clothes. They will hardly discolor and look like new after washing.
High-quality thigh high socks will not make people itchy at all, they are as comfortable as underwear.