FDC-n (FD&C): These are available in various different colors. Some are simply irritants while others are strong carcinogens. Most are coal tar derived, and many scientists feel that adequate safety levels have not been established for each color category.

Fluoride: Hazardous chemical. Researchers linked it to cancer years ago. No one is listening. Fluoridated toothpaste is especially dangerous to young children who tend to swallow it after brushing their teeth. Supposed to stop tooth decay. Scientists are now linking fluoride to dental deformity, arthritis, allergic reactions, can lead to Crohn's disease. A toxic manufacturing by-product.

Formaldehyde: It is a colorless gas with vapors that are extremely irritating to mucous membranes. Used in nail polish and hardeners, soap, cosmetics and hair growing products. Due to it's bad name it is sometimes hidden under the name DMDM hydantoin or MDM hydantoin. Its trade-name is Formalin. Released by imidazolidinyl urea. Causes dermatitis, and ingestion can cause severe abdominal pain, internal bleeding, vertigo, coma, and a loss of ability to urinate. It is very toxic when inhaled, a severe skin irritant, and a suspected carcinogen that is linked to cancer. Its use in cosmetics is banned in Japan and Sweden.

Fragrances: Can contain up to four thousand ingredients (including animal urine), many toxic or carcinogenic. Causes headaches, dizziness, allergic reactions, skin discoloration, violent coughing, vomiting, and skin irritation. Fragrances affect the nervous system, causing depression, hyperactivity, irritability, inability to cope and other behavioral changes