Can be used for face painting with a sponge. Hold stencil against the cheek and apply paint with your sponge. Make sure your sponge is not too wet otherwise it will allow the paint to bleed underneath the edges of the stencil.
If using with an airbrush, hold stencil in place and spray airbrush paint as appropriate over the stencil to leave the stencil pattern.
For face painting wash with soap and water.
For airbrush tattoos remove with isopropyl alcohol or similar.
Simply wipe down with soap and water if used for face painting or isopropyl alcohol if they've been used for airbrush tattoos.