Ammonia is necessary for gray coverage. Ecocolors uses ammonia instead of the "non ammonia "alternative(monoethanolamine) because monoethanolamine is toxic when left on the skin. Please refer to the following link for more info : http://www.ewg.org/reports/skindeep2/report.php?type=INGREDIENT&id=1568 Ecocolors Haircolor uses the least amount of ammonia for efficient gray coverage and the amount of ammonia used is not toxic. Ecocolors is formulated for the scalp and is not formulated for facial skin.
