Shaun Pulfrey invented and pitched the Tangle Teezer brush on Dragon's Den. The product was designed to detangle hair while reducing pulling and discomfort.
Pulfrey appeared on the programme in 2007 and asked the Dragons to invest in his prototype. The panel did not make an investment offer, but the televised pitch gave the product substantial public attention.
Tangle Teezer subsequently became a successful international haircare brand, selling detangling brushes in many countries. Its story is often cited as an example of exposure helping a business even when the entrepreneur leaves the Den without a deal.
The Tangle Teezer is sometimes confused with other detangling brushes, but its distinctive name and Pulfrey's pitch are specifically linked to Dragon's Den.