Buy a 150ml or 50ml refill when re-ordering, which has a cap, and keep your existing pump. Note: the pump is the most complex part of the product packaging and difficult to deconstruct in order to recycle its individual components (plastic, aluminium sheath, inner spring). It will also most likely keep working for quite some time for many bottles to come. Wash (if need be) and reuse the 10ml jar which can be refilled quickly from your 150ml bottle.