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Hello this is Dr. Salama MD,
I would advise you to use Neosporin ointment 3 times daily and hydrocortisone 1% twice daily for 5-7 days.
Both are available over the counter.
Let me know if you have any other questions.
If not, please don't forget to leave a positive rating as that's the only way I get credit for answering your question.
Occasionally insect bites can develop into a minor skin infection which develops into a blister.
That's the reason for the neosporin antibiotic ointment.
How are your blisters doing?