thanks for using Health Care magic .
I would be pleased to answer your question
The reasons for such dryness and cracks could be due to Vitamin B 12 deficiency , Candidal infection( fungal infection
) , Atopic dermatitis
You will need to take Vitamin B 12 daily , you can also consider Vitamin B 12 injections once a week , You can apply Neutrogena intensive lip balm on the lips daily and little bit a vitamin C
based serum on the corners of the mouth daily.
you can visit the Dermatologist
to give you an exact diagnosis .
Thanks and Take Care