It is said that most menstrual towels on the market are made in fluff pulp, which is called secondary recycling. Are they harmful to use?

Fluff pulp is very harmful. In order to save costs, merchants buy old cotton tires, old clothes and recycled paper towels at low prices, all of which are bleached with whitening agent and fluorescent powder, and then made into fluff pulp and processed into sanitary napkins. Too much will infect various gynecological diseases. Market costs such as labor costs, advertising fees and endorsement fees. Can the quality of sanitary napkins be guaranteed?