Menstrual supplies ingredient labeling; restriction of substances; civil penalty. Requires that each package or box containing menstrual supplies, as defined in the bill, contain a label of all ingredients that are included within such products when sold within the Commonwealth. Such label shall be displayed by the manufacturer in a manner that is visible and easy to understand for the consumer. The bill requires any manufacturer to make changes to the label reflecting any changes of ingredients within 18 months of any such changes. The bill also requires the manufacturer to post the required label information on its website. The bill has a delayed effective date of January 1, 2027.