As a guide, think about how you care of your own skin: direct exposure to flame or ultraviolet light, the use of microwave ovens, dishwashers and knives will also damage the urushi ‘skin’. We recommend using wooden cutlery.
When washing, use a soft sponge and mild detergent. Drain and wipe with a soft cloth. If you take good care of your urushi pieces, it will become more lustrous and beautiful as it ages.