Just a new thin layer of white silicone caulk may do the trick. For a few dollars, you can purchase special plastic caulk-remover tools at your home center store.

It may take a bit of elbow grease when removing silicone caulk with one. Make sure to use kitchen and bathroom caulk. These are formulated with mildew-resistant chemicals that are quite effective.

A Mrs Hinch fan has shared her 'amazing' and 'easy' tip to remove black mould from silicone sealant in your bathroom in minutes, using just one cheap essential oil ...