This Urushi is used for application of gold leaf.
To use this Urushi, apply it on top of Hakushita Urushi (箔下漆, Urushi applied before adding gold leaf) that has completely hardened and wipe it with a rag, silk gauze, or cotton to create a smooth and even finish. When it begins to harden, place the gold leaf on top.
This is standard Hakuoshi Urushi.
When increased viscosity is desired, add harder Hakuoshi-kagen, and when more softness is desired, add Uwazuri Urushi.