I was also going to suggest calamine(?) lotion, but it's probably close or the same as the caladryl 88 suggested. If you have hydrogen peroxide it may also be helpful at disinfection, and it's usually never is painful to use.
Either way, it's good to hear he's going to get outside and have some fun.
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Current mods: AEM Bruteforce CAI, Magnaflow SI/DO, Gryphon-87 & 93 tunes, Harley head lamps, tinted windows, lower grille filler, and FX2 lower valance.