Developer 20-Volume is fully stabilized and buffered to ensure consistent and uniform color results. Its creamy, rich formulas offer gentle, controlled lightening and coloring action, our first ammonia-free permanent technology, revolutionized the hair color industry with a breakthrough. 20 volume developer that lightens the hair up to 2 levels Ammonia free Perfect to use in white hair coverage services Completely stabilized and buffered formula Best for Chemically Treated hair
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