My question and comment was intended for @RockinHippy to answer. She mentioned oral supplementation of zinc reversed her severe chapped/dehydrated wrinkled lips.
I've disregarded any replies related to topical treatments (i.e., lip balms, ointments, creams, oils, butters) because I've tried every one in the market. My toothpaste, water intake, diet, and oral hygiene are NOT the issue. Mind you, I've been suffering with this chronic case of cracked, chapped, wrinkled painful lips since age 16 (possible symptom of Anorexia Nervosa) and I'm almost 21 years old. 4 years. Before I went through the eating disorder, my lips never looked like this. I have never seen anyone from ages 16-21 with lips this severely wrinkled, dry, loss of plumpness and dehydrated unless something wrong was going on inside of their body.
My medical insurance is absolutely despicable because my General Practioner, 4 different dermatologists, & allergists have denied, disregarded, and neglected my lip issue and brushed it off with "Just use Vaseline, Aquaphor, or Lanolin and your lips will be back to normal". They never requested, suggested, or addressed internal possibilities that could be causing the persistent chapping, cracking, loss of plumpness, and lack of smooth/supple texture despite continuous application of Vaseline.
Sorry for the long, over-emotional post.