There are a ton of additives that have been in soaps and shampoo that can cause cancer... https://www.healthline.com/health-news/cancer-dangerous-chemical-foun

There are a ton of additives that have been in soaps and shampoo that can cause cancer... https://www.healthline.com/health-news/cancer-dangerous-chemical-found-in-shampoos-and-soaps-082913 https://www.healthline.com/health-news/cancer-dangerous-chem... http://www.medicalnewstoday.com/articles/285641.php http://www.medicalnewstoday.com/articles/285641.php http://www.mirror.co.uk/lifestyle/health/breast-cancer-fears-over-chemical-6712286 http://www.mirror.co.uk/lifestyle/health/breast-cancer-fears... http://www.cancer.gov/about-cancer/causes-prevention/risk/substances/coal-tar http://www.cancer.gov/about-cancer/causes-prevention/risk/su... And I am sure that over time there will be more things in our environments that we are regularly exposed to that will be identified as cancer causing, although it is hard to predict which ones.