Chapped lips can result in parts of skin that are uncomfortable but that can be peeled off. If a person with chapped lips has a habit of using their teeth to pull off the dead skin, are they committing a forbidden act since the skin goes into their mouth? If such is permissible, however, can they then swallow the skin?
For clarification, the question on autocannibalism explains that consumption is permissible if that which is consumed stays within your body. What I'm wondering specifically is the following: In the case of dead skin from flaky lips, does swallowing skin removed by teeth qualify as 1) the skin remaining on/in the body and permissible or 2) the skin becoming off/outside the body, thus forbidden?