Tagua is a very hard, durable substance, but it is sensitive to water.
Do not take your pendant into the shower or a swimming pool. Water will not destroy the tagua, but it will corrode the design and can possibly cause the pendant itself to warp or crack, if submerged for long enough.
Tagua 'antiques' a bit over time, often turning a rich yellow-ivory color with age. This is normal! Some pendants stay snow white and some turn a rich, dark ivory — each tagua slice is unique. Beautiful shapes.
Tagua can be polished by hand with natural waxes.!