Well the piercer I went to is app certified and has been to many conferences that elayne angel has done. Have you heard of her. The woman who wrote the piercing bible. I read her book so many times. And even got the new and improved piercing bible that just came out. Nothing else worked for my piercings and even emailed her for advice and she told me about emu oil it works wonders for me.
It's not a cream, but I've had a good long-term experience with emu oil (https://www.amazon.com/PRO-EMU-OIL-Natural-Emu/dp/B001DKF08S). I find that it keeps my skin moisturized throughout the day, which helps lessen the itchiness. I think it's also anti-inflammatory and helps with wound healing (cuts and burns). Right now, I'm dealing with scalp psoriasis / alopecia areata, and emu oil mixed with other essential oils has been helpful in reducing skin peeling and itchiness, as well as excessive hair shedding.
To stop scratching is one the main keys. And diet may be a hidden trigger, so it's good to be aware of any potential allergic reactions you're having. Hope this helps :)
Look up Elayne Angel she has a website too. She's the author of the piercing bible.