i don't know if you are talking about the ear canal or the outer ear but vaseline is safe. knowing the cause of the itchy ears would be good since itching caused by eczema would be treated differently than itching caused by a fungal skin infection that can also occur in the ear canal. vaseline will not really treat this hopefully you are not using q-tips for ear wax removal. why? earwax is a protective coating for the ear canal and if you remove it with a q-tip it can cause itchy ears.
is vaseline safe for toddlers itchy ears? it sooths the itch when applied.