Whats the most significant course to removed chlorine that have hardened on plastic surfaces? without wounding the plastic surface. Not just plastic but, other surfaces...

without wounding the plastic surface. Not just plastic but, other surfaces as in good health, and in vocabulary of plastic I mean the munificent found on shower heads or some dampen filters.
Answers:    If you show the hard white enormity you need something acerbic. If you can take the segment off it will come verbs soaking in heat vinegar water otherwise try putting a vinagar soaked cloth on it or buy lime away.
Did you try a magic eraser? That point removes everything. Or CLR- its supposed to work without hurtful most surfaces- I cant remember about plastic but newly read the back up to that time you buy it. Its found in pretty much any grocery store or department store.