There are two ways to bath a pig.
The Shower Method
Place the piggy in the bottom of the shower, or in the bathtub.
Take of the showerhead so you just have a hose.
Take the shower off its high up stand so you can have it in your hand to control where the water goes.
Turn the shower on but only turn the tap a small way so there is little pressure from the water.
Make sure the water is warm but not hot.
Rinse piggie all over, and rub in some animal shampoo, keep the shampoo away from eyes and nose.
Face piggie away from you and run your fingers through the hair on his bum, with the shower rinsing the hair.
Lift him up slightly and do the same to his belly.
To do his face, turn the heat down slightly, and lift him up so he is facing you, and is leaning with his paws on the side of the bath.
Turn the pressure down a bit so you have a little bit off water coming from the spout.
Clean downwards toward his ears, being careful not to get any water in his nose.
In this position you can also clean his chest, paws and butt.
Rinse off all the shampoo and either towel dry or use the hair dryer on a low heat.
The Tub Method
Fill a tub/sink with warm water.
lower piggie in making sure that he doesn't panic and slip.
Restrain him if he tries to escape.
with a cup or cupped hands pour warm water on him, rinsing his coat.
Run shampoo through his fur thoroughly.
Take piggy out and put him in the bath while you refill the sink or tub.
Rinse him off in the fresh water.
Drain the sink or tub and use a cup to get the rest of the shampoo out.
Towel or hair dry.
The tub method is not advised for face cleaning