Materials, care and safety.
Wipe with a barely damp cloth and dry it immediately, bristles down. Do not soak wood or leave it in a bathroom where it stays wet — that is what causes cracking, not age.
It is designed for short, occasional use and warms to a fixed low temperature. Read the instructions included in the box, keep it away from water, and do not use it on mascara or on irritated skin. If you have a diagnosed eye condition, ask your doctor before using any heated lash tool.
Linen, silk and wool vary in weave and tone between dye lots. Small differences in texture are a property of the material, not a fault.