Methylisothiazolinone is a preservative added to a range of beauty and household products such as shampoo, moisturizer, shower gel, deodorant, foundation, mascara, household cleaners, paint, baby wipes and more. It causes 1 in 10 people to have severe allergic skin reactions, including babies when in contact with products such as baby wipes meant to be gently and soothing on skin. Symptoms include cracked dry skin, inflammation, puffy eyes, seeping and severe itching.

Companies know that this preservative causes allergic reactions in a very large percentage of the population but still continue to use it, and in some cases will switch to using it in products when previously using other preservatives.

Use your buying power to force companies to find a safer compound.

The list of companies to avoid has been adapted from the National Institute of Health US government website.