In follow-up to the topic of protecting ebonite and celluloid (cellulose nitrate) started in this thread:
I've been going down the rabbit hole of researching HALS and other chemicals that offer protection against UV light-induced oxidation. Something that would act as a moisture barrier would be nice as well. HALS and related chemicals can ostensibly be purchased, but the myriad variations and solubilities have me baffled. I found a resource on conservation of paintings
but it doesn't really answer my question: what would be safe to use on a vulcanite and/or celluloid pen that would protect it from UV light and water, and can I apply it safely to these surfaces?
Any help would be appreciated.
And please be gentle - biochemistry was my major in college but that was decades ago.