you cant get a hair cut but you can go to veilstone and look in the houses and talk to a girl and she will give you the option for her to massage your pokemon, this can improve your friend ship
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You can't give your Pokémon a haircut in Sapphire.
you cant get a haircut in pokemon black and white only x and y so on
There are no groomers in Pokemon Pearl, but you can take your Pokemon to get a massage by a lady in Veilstone City. This boosts their Happiness like it would with a haircut.
The goldenrod city underground there are two haircut brothers that appear on different days! have fun ;)
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