Marianne established MM Mfg. in 1990 to create the healthy and safe industrial products she wanted, but couldn’t find—those made of corn oil and ingredients that were more quickly biodegradable than the petroleum used at the time. True to her word, acclaimed by all who use them, her products have earned Certified Bio-based Product Recognition from the U.S.D.A. Conditioning while cleaning skin, tools and brushes, MM Mfg. products keep skin healthy. People call Marianne “marvelous” because “She worries about our hands and tools so we don’t have to.”