Hi,
Thank you for your query,
For the dryness of ear you can apply
Cetaphil moisturising lotion for twice or thrice daily and usually immediately after bathing within 1 or 2 minutes to maintain the moisture after bath.
And for bathing you can use moisturizing baby soaps.
If it is still dry consult your
Pediatrician for proper advise.
Hope i have answered your query.