The bill titled "An Act relative to diaper product ingredient disclosure" aims to enhance transparency regarding the ingredients used in diaper products sold in Massachusetts. It introduces a new section to Chapter 94 of the General Laws, which defines key terms such as "ingredient," "manufacturer," and "diaper." The bill mandates that each package or box of diapers must include a plain and conspicuous printed list of all ingredients in order of predominance, either printed directly on the package or affixed to it. This requirement is in addition to any existing labeling laws.

Furthermore, the bill establishes a civil penalty for manufacturers who fail to comply with the ingredient disclosure requirement. Specifically, a penalty of one percent of the manufacturer's total annual in-state sales will be imposed, with a cap of one thousand dollars per package or box. The act is set to take effect immediately upon its passage, emphasizing the importance of consumer awareness regarding the materials used in diaper products.