It's best to let the snake get the shedding off itself since they naturally know how to do so. Though, if the snake cannot get the shedding off, it is recommended to give the snake a warm soak for maybe 20-30 minutes to let the skin get moist so it is easier to get off. The snake may try shedding while soaking or will try to shed once it is put back into its home.

I may add that assisting the shed off isn't really an option. I've assisted with some sheds when I didn't know any better, but from being on here I've learned that having the proper humidity and allowing the snake to shed on its own really does the trick. The bad thing about assisting is that if you are too rough or the scales in one area are not ready to come off you may pull off some scales from the snake's skin. The scales also cannot grow back, so once the scales are gone, they are gone for good.