Free: Contests & Raffles.
First question is how did you clean the skull? nature cleaned, boiled,or bugged? Did you degrease the skull? Whitening a skull that has not been degreased is kind of a loosing battle as the grease fat left in the bone eventually migrates from deep within the bone to the surface...if you have a greasy skull, peroxide may whiten it some but will not look all nice and pretty and stay that way. Next question - When you say 40% hydrogen peroxide is it 40% or 40 Volume (as in the stuff from a beauty salon outlet. If you really have or are going to use 40% think carefully and read all of the potential issues...safety glasses is an absolute necessity..because even the 40 volume (15%) can cause blindness and the 40% can instantly cause sever corneal burns. as well as skin burns if not washed away promptly.\Do not put anything in a Ziploc bag because it can explode due to pressure in the bag caused by the breakdown of the peroxide.Oh there is one other thing, Hydrogen peroxide breaks down the collagen in bone and it can literally destroy fine bone. If you really want to learn to do a professional type bone cleaning or at least something you would like to hang on the wall- do some reading, join a FB page such as https://www.facebook.com/groups/1615077132104024/2021871988091201/ and learn how to do what you want safely and well.....Good luck.