how to descale a shower head

{"cid":"91206682","title":"Wall Mounted Round Faucet Shower Set Pressurized Shower Head For Household Bathroom","imgUrl":"https:\/\/img.chinax.com\/nimg\/68\/0b\/50f0661cb02101bfb77b8c60661b-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"T&F","Model Number":"TFCS9220","Minimum Order Quantity":"1 set","Delivery Time":"7 days after payment","Place of Origin":"Foshan , China","Payment Terms":"T\/T , Western Union","Supply Ability":"3000 Pcs per days","Packaging Details":"Non-Woven bag+Foam Box+Color Box+Master Carton","Water pressure requirement":"Minimum water pressure three kilos","Surface treatment":"electroplating","Shape":"Round","Cartridge Lifetime":"500000 times open and close","Installation mode":"wall-mounted","Product color":"Glacial silver","Product material":"Copper alloy body","OEM+ODM":"Acceptable","LED Power":"Electricity power","Body material":"copper"}}

{"cid":"91211748","title":"CONNE Smooth Mirror Effect Bathtub Handheld Shower Head 3 Function Hand Shower","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/87\/9106ee5f916f27f1b24e9cd33262-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"CONNE","Model Number":"XS01001305","Minimum Order Quantity":"300pcs","Delivery Time":"30 work days","Certification":"DVGW\u3001ACS\u3001watermark\u3001WARS\u3001SABS","Place of Origin":"China","Payment Terms":"D\/P, L\/C, T\/T","Supply Ability":"300pcs+30days","Packaging Details":"color box+carton packing","type":"Hand showe","Material":"ABS\u3001POM","color":"chrome\uff0cSpace Silver","Application":"Bathroom","Shape":"Round Shape","funcition":"three"}}

{"cid":"91217791","title":"Bathtub Accessories Alkaline Pitcher Filter No Leak Terminal For Rain Shower Heads","imgUrl":"https:\/\/img.chinax.com\/nimg\/40\/2a\/ccd04a305e5eaab3cc3015e293ed-200x200-1.jpg","attrs":{"Price":"To Be Negotiated","Brand Name":"BRISKSPRING","Model Number":"M2-C","Minimum Order Quantity":"1 PCS","Delivery Time":"20 days","Certification":"SGS","Place of Origin":"ZheJiang China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"10000 pcs per month","Packaging Details":"carton+box","Filter Life":"6 Months","Filter Size":"2.5 inch","Filter Type":"Activated Carbon","Flow Rate":"2.5 GPM","Inlet\/Outlet Connector":"1\/2 inch","Material":"Stainless Steel","Maximum Operating Pressure":"125 PSI","Maximum Operating Temperature":"100\u00b0F","Maximum Pressure Drop":"2.5 PSI","Minimum Operating Pressure":"20 PSI","Minimum Operating Temperature":"40\u00b0F","Pressure Range":"20-125 PSI","Temperature Range":"40-100\u00b0F"}}