Gilding brush is made of soft hair from squirrel tail as it is a special tool for working with gold leaf or silver.
The light material may break to pieces by the slightest movement of a hand. So the gilder should be very careful and should take gold only with this tool, because there is no other brush which can gently catch, hold and apply a thin gold sheet without damaging.
The squirrel hair is glued between the cardboard leaves. Besides, this brush can be used for smoothing out gold leaf on uneven surfaces
Application: For gilding