Wella Company, and its namesake brand Wella Professionals, have introduced a more sustainable version of its Welloxon Perfect salon color developer.    The new product line was designed with sustainability top-of-mind, the makers say, from formula, to packaging materials, transportation and in-salon use while delivering predictable color results, per the brand.   The innovation advances Wella Company’s strategy to use more sustainable ingredients, formulations and packaging acros...