Shaun Pulfrey pitched the Tangle Teezer on Dragons' Den in 2007. The product is a detangling hairbrush designed with flexible teeth to reduce pulling and breakage.
Pulfrey appeared on the programme seeking investment for his invention, but the pitch did not secure a deal. The product later became a major commercial success, making the appearance a frequently cited example of a business that grew after leaving the Den without investment.
Tangle Teezer is sometimes confused with established salon brands such as Denman or GHD. Those companies make different products and were not the invention presented by Pulfrey on the programme.