100% Borosilicate Glass
To safely clean this precious piece, we recommend hand washing in warm water with a soft bristle brush. Avoid using strong alkali soaps, as these may damage the glass. Take care not to bump glassware against hard surfaces or other vessels during cleaning. Always ensure the vessel is within sight when the candle is lit. Keep away from flammable objects, open windows and draughty areas. Do not move the vessel once the candle has been lit. Be careful, the glass may become hot.
Do not burn candle lower than 2cm above the top edge of the candle holder.