Hi..
Can understand your concern..
As per your complain a cut on the lip if not caused due to any traumatic injury can be due to dryness and chapping of lips due to sunburn,dehydration, bacterial infection,
allergic reaction,
malnutrition etc..
I would suggest you to
consult a dermatologist and get evaluated for the exact cause of the chapped and cracked lips.
In case of dehydration drinking plenty of water and other liquids to maintain hydration and application of thick coat of petroleum jelly or a lip balm can slowly heal up the crack..
In case of sunburn apply an SPF 15 containing lip balm and keep the lips covered while going in sun..
You can also apply ice packs over the lips and steroid based ointments can also help..
In case of bacterial infection maintenance of hygiene and application of antiseptic ointments and a short course of antibiotics can help..
You can take a
multivitamin tablet for 15 days to cover up for any
vitamin deficiency..
Hope this information helps..
If you find the answer helpful please write a positive review and click on find this answer helpful as a token of appreciation..
Thanks and regards..
Dr.Honey Nandwani Arora..