Ethanolamine is used in our demi-permanent hair colorants instead of Ammonia. In principle it has the same function - swelling the hair and open the cuticle to enable diffusion of dye molecules to deposit into cuticle layer. While permanent hair colorants are long-lasting, demi-permanent products containing MEA wash-off after 24-30 washes.In our color conditioners we use MEA to enable dye molecules to penetrate into cuticle layer instead of depositing on the hair surface to intensify the color refreshing effect.Ethanolamine is further used as feedstock in the production of detergents, emulsifiers, polishes, pharmaceuticals, corrosion inhibitors, and chemical intermediates. For example, reacting ethanolamine with ammonia gives ethylenediamine, a precursor of the commonly used chelant, EDTA.