bookbinding, egg white (called glaire in this context) is used to adhere gold leaf in gold tooling. In manuscripts, egg white (or yolk) can be used as a binder for pigments.

Medicine

In the 1750s, egg whites were believed to prevent swelling, and were used for that purpose. To help soothe areas of skin that were afflicted, egg white mixed with Armenian bole could help restore the fibers.