Q: I just read two of your books, first on acne and the second The Green Beauty Guide! I got really interested in your Petite Marie skincare, but there is one thing that made me cautious and itâ??s the colloidal silver as preservative in acne skincare. After seeing those scary photos in Google with those grey faces people had after using colloidal silver orally that I just got scared. Isn't it possible that colloidal silver just builds up in our body later creating this grey face effect?

A (Julie Gabriel): I have been receiving quite a few questions about the safety of colloidal silver that we have used in some of our products. As a substance, colloidal silver acts as an anti-fungal and anti-microbial agent. We do not add colloidal silver to prevent or treat any disease. It was used solely as a mild preservative.

Recently, FDA has banned colloidal silver from use in over-the-counter medicines. Skincare products being non-medicinal, we still want to avoid any confusion, and we decided to remove colloidal silver from our products in favor of potassium sorbate, rosemary extract/essential oil, and other natural preservatives. Read more of this post