Hair dyes and straighteners often contain endocrine – disrupt chemicals which interfere with hormone function in the body. Ingredients such as Aromatic amines, Parabanes and phthalates are commonly used in permanent hair dyes, while chemical straighteners frequently contain Formaldehyde and other relatable compounds.
“These chemicals are capable of damaging DNA and leading to cancer. Formaldehyde, widely used in straightening treatments, can be absorbed through the scalp, especially when heat is applied during styling,” Dr Monika Jani, Gynaecologist and Obstetrician at Bhailal Amin General Hospital, Vadodara told Financial Express.com.
These chemicals are absorbed through the skin during use and can build up in the body over time, contributing to hormone imbalances that influence breast tissue growth. This can also make disruptions in estrogen levels.
“While using these products occasionally may not cause any risk, frequent and long term use can increase the risk of developing breast cancer. Women who use chemical hair straighteners every 5-8 weeks are about 30% more likely to develop breast cancer. The darker shades of hair dyes contains higher level of chemicals, the risk also arises with regular usage,” Dr. Jani said.
She also said that minimizing the frequency of product use or switching to less toxic alternatives such as natural hair dyes. It is advisable to avoid heat treatments combined with chemical straighteners as heat accelerates chemical absorption.
“Women with a family history of breast cancer may be more likeable to develop these risks. They should take extra precautions by reducing exposure to such products. Women are advised to weigh the benefits of hair dyes and straighteners against potential health risks. Choose safer products, reduce usage frequency and staying informed about the product can help minimizing the risks,” she said.