Using a round brush to blowout hair is one of the best ways to get a smooth bouncy blowout. Using the right size round brush is important to achieve the look you want. The bigger the brush you use the more volume you will create. The smaller the round brush you use the more curl you will create. But what is considered a big or small size round brush for you depends on the length of your hair. For instance, a  1 ¼″ size round brush would be small for someone with hair down to their chest, but perfect for chin length hair.

When it comes time to blowout your hair think about what style you want to achieve. If you have long hair and want to have a lot of curl in your hairstyle you are going to want to you a smaller size round brush. Here is a guide to help you pick the right size brush for your hair length to achieve the hairstyle you want.

Round Brush Size Guide

Round Brush SizeHair Length Best Round Brush
1" Pixie CutMoroccanoil 1inch round brush
1 1/4" To 1 1/2"2" To ChinOlivia Garden Round Brush 114

olivia garden round brush 112
1 3/4" Chin To Chestmoroccanoil 45mm round brush
2" Chest And Longersam villa round brush

This guide is great to find what size round brush works best for your hair length to get a nice smooth blowout. A good rule of thumb is, if you want more curl go down a size from your standard size. To get a straighter more voluminous hairstyles go up a size from your standard size round brush for your hair length.

Always feel free to leave me a comment with any question you may have or if you need help. Also check out my post on Best Round Brush For Blowouts, Best Hairbrush BreakDown, The Right Hairbrush For The Right Job.