Not sure there are any insect bite remedies I will pass over. I have had bad reactions to bites all my life and also seem to attract biting creatures. This, says the love of my life, is the reason she takes me on holiday as I keeps the mozzies off of her. Last two weeks I've had about thirty bites. She has had two.
I will use creams, gels, repellents, sprays, anti-histamines the lot. Anything, including cold showers in the middle of the night.
This year's holiday in a hot climate has been average for insect bites but very good for controlling the symptoms. The new piece of equipment I have is this. You electrocute yourself (nicely).
Three or four clicks on the bite and wait for five minutes or so and I swear you will have forgotten all about it. Works for about four hours or so. Best gift I've had for ages.