Folk Art Artists' Varnish is a sealant I can't live without.
I use Matte, and sometimes Glossy for eyes and other details. It's also perfect for fixing sticky ponies!
Has anyone used games workshop sealants on ponies? Ive used it on models and really like it and i want to use it when i do a pony.
I tried Purity Seal Satin once, wasn't too happy but I don't want to judge based on one try. The paint chipped really badly on that pony, but I'm not sure if it was the sealant or the fact I didn't prime her first (then again, I didn't prime any of my ponies back then, I only started after this experience) or if it was just one unlucky case. It didn't go sticky though, so in general I'd say it's safe to use and works with ponies.