My incisions didn't get infected but did itch terribly and this really did help: Amazon.com: Anti-Chafing Sports Salve, all natural anti-fungal, best remedy for chafing, rash, and skin fungus: Health & Personal Care

BTW, I'm not sure you use them, but 4% Lidocaine Patches are available over the counter by Salonpas and Aspercreme for less than $2 a patch. Insurance companies seem to be regularly refusing even generic 5% patches and out of pocket from Costco they're $150 for a box of 30.