'21-Free' means there is no animal products, toluene, benzene, xylene, formaldehyde releaser, formaldehyde resin, phtalates, cyclic silicones, camphor, MEK, glycol ethers of series E, HQ, MEHQ, TPP, nonylphenol ethoxylated, Tert-Butyl hydroperoxyde, chromium oxide greens, bismuth oxychloride, CMR, synthetic fragrance, ethyl tosylamide.