Feminine menstrual hygiene products, such as sanitary pads, panty liners, menstrual underwear, tampons, and menstrual cups, are essential items for women’s intimate hygiene. They play a crucial role in safeguarding both the physical and mental health of women while enhancing their overall quality of life. Recently, some Chinese KOLs highlighted the discrepancies between the stated and actual lengths of certain sanitary pads and unqualified pH levels, raising concerns regarding non-compliant sanitary products.