Are there any good ways to improve dry skin?

I have dry skin, so every winter,

Itchy sensations begin when I take off my clothes in the evening.

It just itches, bleeds, and forms a scab.

The treatment for dermatology visits is the prescription of moisturizer.

In severe cases, moisturizers are useless.

Even if I go to the hot springs, it doesn't have much effect.

The only effective measure is to maintain the humidity level above 60%.

It must be just me.