I've noticed the outer lips of my vagina are really itchy and chapped. i wear a panty liner everyday, could i be allergic to something in the liner?

Possible: It is possible to be allergic to sanitary napkins. In addition, please evaluate the need for wearing pantiliners. It is pretty humid in the summer and wearing pantiliners all the time is not necessarily healthy. Please avoid pantiliners for sometime and also do not use under garments for a few weeks at night to see if the lips of your vagina heal. Apply some hydrocortisone cream twice a day.