Christophe Robin Pre-Curved Blowdry Hairbrush 10 or 12 Rows There are two options for this Christophe Robin Pre-Curved Blowdry Hairbrush ($97-$103) — one has 10 rows of natural boar bristles (for smaller curls or shorter hair) and the other features 12 (for longer hair or bigger curls). Image Source: sephora.com Christophe Robin Pre-Curved Blowdry Hairbrush $97 from sephora.com Buy Now