I've tried the above as well as bleach and washing powder as well as just about everything else
The best no fail way to get a perfect sparkling white skull is to firstly remove as much of the fat and grease as possible before even trying to whiten it. Boil and scrape the fat that escapes from the skull sutures and then degrease the skull with a rag with a very small amount of white spirits or something.
Once bone dry and fat free, soak cotton balls in pure peroxide and stick them all over the skull until it is covered with them. Leave them on for a half a day or so keeping them moist with peroxide as they dry out. Then put the whole skull outside in direct sun and in a few hours should be perfect.
Bookmarks