On Season 13 of Shark Tank, an entrepreneur from Derby, Connecticut, Tony Litwinowicz, presents his modern solution to an age-old hair-cutting problem with his all-new measuring tool.
HairFin is a patent-pending home hair cutting device that measures your hair before cutting. The hair cutting guide is available in three different sizes: 2 inch, 3 inch and 4 inch. It works with barber scissors and electric trimmers.
HairFin is getting 5-star reviews on Amazon. One verified customer, who goes by the name Holden Caulfield (aka the pessimistic protagonist of J.D. Salinger’s The Catcher in the Rye) wrote: “So low-tech it’s foolproof.”
[Related: 27 Favorite ‘Shark Tank’ Products at Amazon — New List]
Shark Tank airs Fridays at 8 pm on ABC. [BONUS: Stream any ABC show through the ABC GO Digital App found here. Download is FREE.]