Get Gorgeously Green: Here is another beauty ingredient to avoid. It is formaldehyde. You might not see the chemical listed in ingredients like the Brazilian Blowout "non-formaldehyde formula." Nevertheless, it is a toxin found in imidazolidnyl urea, DMDM hydantoin, and quaternium-15. When the chemical is wet, it evaporates into the air. Protect yourself and your stylits by singing " no, no, no" to the Brazilian Blowout.