I've never had any irritation from cosmetics before, but I wondered if it was the UV absorbers that were causing it, so I bought this scattering agent. The irritation subsided immediately! It's a little hard to spread, and it makes my skin white the moment I apply it, but I was amazed at how effective it is at calming redness. It naturally fades! After that, I didn't have to worry about my foundation coming off! It was a lifesaver. This is my second purchase.