K.W.
I take my 4yo and 2yo to Cartoon Cuts in the White Marsh mall. It's a wonderful environment to distract your child, while getting a quick, great looking hair cut. They have a TV at each seat, so your child can choose which show she would like to watch. They will also hand your child a bucket of toys to play with, and have lollipops, balloons, etc. These ladies deal with little ones all day long, and are very good...I've never had a bad experience.
Good Luck!