How do you know if a product has a particular chemical you're trying to avoid?
A number of apps can help you while you shop. Some let you scan products. Here are a few to check out.
Think Dirty
https://www.thinkdirtyapp.com/
The Environmental Working Group's Healthy Living app
https://www.ewg.org/apps/
Good Guide
https://www.goodguide.com
The Silent Spring Institute's Detox Me app
https://silentspring.org/detox-me-app-tips-healthier-living