There’s very little white space in beauty, even though many brand founders want you to think there is. But one area that has remained mostly untapped is the hairbrush market. We have plastic, drugstore brushes (such as Tangle Teezer, Wet Brush and Unbrush) and luxury, high-end brushes (Mason Pearson, La Bonne Brosse, Yves Durif). There aren’t a ton of options for quality hair brushes in the middle — and there’s very little out there for travel.

That’s what Founder Isabella Di Stefano wants to change with her new brand, Original Heir . “Most people have no idea what hairbrush they should be using, what the bristles are actually doing or why one brush costs $10 and another costs $200,” she tells Fashionista via email.…