CLR calcium lime and rust remover in a dish or glass large enough to submerg the entire head.
1: Remove shower head.#2: Place shower head in bowl or bucket large enough to submerge shower head.#3: Fill bowl or bucket with enough cider vinegar to cover shower head.#4: Wait for it.#5:...
A popular brand of cleaning chemical called CLR found at most general stores like Walmart and Home Depot etc is commonly used.
try a product called CLR or lime-a-way. Available at ***-mart
Dip it in CLR like the commercial shows you
GregorS wrote: Dismantle the head , soak the parts in chlorine for a few hours. Reassemble. -- I am not sure that works,...