If you want to apply hyaluronic acid or glycolic acid before applying the ointment, you can try it, but these can potentially be irritating for open cracked skin. This is because dry, cracking lips are essentially a damaged skin barrier. Also, don't forget to apply ointment to your lips throughout the day like after eating or before walking outdoors in cool weather. #dermatologist #dryskin #drylips #chappedlips #drylipshack #dermdocheather #drheatherderm