Rosin allergy

This article has been translated from Finnish to English by Semantix. You can find the original article at the web adress

Rosin, i.e. colophonium, is a complex substance that can be obtained from trees and especially from pines. Rosin is made either of the resin of a living tree (gum rosin) or the stumps of dead wood (wood rosin). Rosin acids and modified rosin acids form the the chief components of rosin. The substances of rosin that cause allergic reactions arise from the oxidation of abietic acid and dehydro abietic acid, among others.

Rosin and cosmetics

Today, rosin is used very little in cosmetic products – it is mainly found in depilatory waxes and in a few water-proof mascaras.

In the labelling of cosmetic products, rosin is indicated by its INCI names Colophonium or Rosin, and its derivates by the names Rosin Acrylate, Glyceryl Hydrogenated Rosinate, Rosin Hydrolyzed Collagen.

A person allergic to rosin should also avoid products with substances that arise from the oxidation of abietic acid, such as Abietic Acid, Abietyl Alcohol, Hydroabietyl Alcohol and Glyceryl Abietate.