Hedrin Once Head Lice Treatment

Hedrin is a leading anti-lice brand developed by Thornton & Ross, a pharmaceutical company founded in Huddersfield, West Yorkshire, United Kingdom, in 1922. Thornton & Ross created Hedrin's physical mode-of-action silicone-based (dimeticone) formulas to treat head lice infestations without relying on neurotoxic insecticides.

In various European and Nordic markets, including Denmark, Hedrin products have been commercialized and distributed under license or partnership by Mundipharma, whose logo appears on the bottle. Thornton & Ross itself was acquired in 2013 by the German pharmaceutical corporation STADA Arzneimittel AG, which is owned by private equity firms Cinven and Bain Capital.

Hedrin Once is manufactured in the United Kingdom by Thornton & Ross Ltd and distributed throughout Scandinavian pharmacies and retail stores via regional pharmaceutical partners like Mundipharma.