A Panty Liner is an absorbent piece of material used for feminine hygiene. It is worn in a woman’s panties. Some uses include absorbency for daily vaginal discharge, light menstrual flow, tampon, and menstrual cup backup, spotting, post-intercourse discharge, and urinary incontinence. Panty liner keeps you dry and fresh all day. It is similar to a pad but just not as thick or absorbent.