
My experiences with round brushes haven’t been so fabulous. My first round brush was purchased two years ago. Short story — it ended up with me crying on the floor, telling my boyfriend to just cut it out of my hair. He has a lot more patience than me and somehow he was able to get it out without any assistance from scissors.
A round brush can seem intimidating at first. Stylists always make it seem so easy… the brush just glides gently through your hair (but hairstylists are total magicians who constantly have their hands in hair, so of course it’s a breeze for them!). When you’re at home? It’s not so easy. The problem there could lie right in your hands… literally! The wrong size brush! This was my problem.
Here’s how to know if you’re using the right or wrong size round brush

For short hair
If your hair length is at your chin or shorter, the best size of round brush would be a 1.5″ or smaller like the Paul Mitchell Expression Ion Small Round Brush. A round brush can add volume to short hair. This brush is also great for bangs.
Medium Hair
For hair length from the chin to the shoulder, a 1.5″-3″ round brush is what you need. If the brush gets stuck in your hair or becomes clogged while styling it, it is probably too small. Make sure the brush is sized to glide smoothly through your hair.
For Long Hair
For collarbone to longer hair length ladies, a 3″-5″ round brush is your go-to. Don’t be turned off by this big, monster looking brush. This brush will create the perfect long-haired look.