White vinegar is the natural weapon against plaque par excellence! In addition to removing limescale, it cleanses! To clean a bathtub with white vinegar, all you have to do is :
Spray white vinegar over the entire bathroom (basin, walls, faucet, hose, siphon, shower head, etc.), using a spray bottle,
Leave it to act for a few minutes,
Scrub the entire basin with a non-abrasive sponge,
In addition, if the shower head is very scaled, it can be disassembled and immersed in a bowl of hot water (1/3) and white vinegar (2/3). Leave to set for a few hours while the white vinegar dissolves the limestone.
You can add a few drops of essential oil to white vinegar to freshen it before using it to clean the bathtub. As an added bonus, some essential oils, like tea tree and lemon essential oils, have anti-bacterial, anti-fungal, and anti-parasitic properties !