- Adapt the size and type of brush to the character of your hair: larger, flat brushes are best for long, medium or thick hair, while smaller diameter brushes are best for shorter, finer hair. Avoid using the brush on wet hair - it will be more fragile and easier to break. For gentle detangling, always start at the ends and work your way up to the roots. Boar bristles will give your hair softness and shine on a daily basis.