Dimethyl MEA is a pH adjuster that can also be found in cosmetic products. It alters the pH of a product to improve stability over time. Every formula has an optimum pH to make it work best. For example, a formula that’s more acidic works better for soap scum removal. Its opposite, a formula that’s more alkaline, might be more effective as a carpet cleaner. We use pH adjusters to make sure we achieve the best pH for a particular job.