I used to have all kinds of trouble with itching after a shower.  Within a few minutes of showering I would itch so bad it would drive me nuts, to the point of asking my doctor about it.  He told me to buy some Eucerin lotion and put it on before I got out of the shower or even dried off.  Yeah, right.

I went to Wal-Mart, got a jug of this

and while I am still wet, before I even get out of the shower, I apply this liberally  to my arms and legs.  I don't itch anymore.

I don't know if there is a generic equivalent and I DON'T CARE.  THIS WORKS