NOTICE: Before the first use, sterilize it with boiling water for 3 minutes. Safety Information: Menstrual cups will not prevent pregnancy or protect you from sexually transmitted infections (STIs) and must be removed before intercourse. Menstrual cups are not designed to be used for post-natal bleeding. Never use Cup for more than 12 hours at a time without washing properly. Never wash your Cup with anything that may irritate your vagina if not thoroughly washed off the cup before reinserting. Avoid harsh cleansers like vinegar or bleach and strongly scented or fragranced cleansers that may cause the silicone to deteriorate. Avoid soaking Cup in anything other than water. Silicone is a porous material and can absorb oils or cleansers if exposed for longer periods of time; these substances may irritate your vagina or cause the silicone to deteriorate. Legal Disclaimer : If you feel symptoms of general pain, burning, irritation, or inflammation in the genital area, or discomfort during urination, remove menstrual cup and contact a physician.