Use of Underarm Cosmetic Products in Relation to Risk of Breast Cancer: A Case-Control Study

Previous studies regarding breast cancer (BC) risk and underarm cosmetic products (UCPs) with aluminum salts have shown conflicting results.

Here we provide comprehensive information about the use of UCPs and aluminum measurements in breast cancer patients and healthy individuals.

The findings suggest that the frequent use of UCPs lead to an accumulation of aluminum in breast tissue. We observed an increased risk for BC in women who reported to use UCPs more than once daily starting at an age < 30 years.

We recommend that particularly women at younger ages should be careful using UCPs and avoid its excessive use.