Last year I was searching for something to help me in the shower and with the cold, also with dry skin, I found that plain, liquid lanolin can help. It is sticky and heavy, but it helps.

Sheep shearers have young looking hands from the elements protection lanolin provides. I found that lanolin cut down the intensity of sensations and helped with dry skin. I sometimes would put msm lotion on first , wait until it was absorbed, then put on lanolin, wait a bit, then wrap my foot and leg in plastic wrap. Basically this is occlusion therapy.

Also, I found I could sit in the shower with a large face cloth on my feet, which allowed me to shower at a normal temperature.