Best for... The large barrel of the size 3 brush is best for blow-drying longer hair. Natural bristles create a smoother finish. To use... Blast hair until it’s 80% dry. Working with medium sections, place the brush into the root area and direct the heat from your dryer at the barrel. Keep the tension as you move the brush through your hair, directing heat at the barrel as you go. Style tip... A round brush can double up as a dressing brush. Mist your Size 3 brush with ghd Style Final Shine Spray before gently brushing your lengths and ends to calm static and flyaways and add a glossy sheen.