Metanium Everyday Barrier Ointment Metanium Everyday Barrier Ointment forms a barrier over baby's delicate skin to protect against the external irritants that can cause nappy rash. The unique formula also helps to seal in the skin's natural moisture, keeping it soft, smooth & supple. Metanium Everyday Barrier Ointment contains no colours, lanolin or fragrance & is gentle enough to be used at every nappy change.