How do you get rid of thick limescale or hard water stains from toilet?

Thick limescale and hard water stains in a toilet can be unsightly and difficult to remove. These stains are caused by minerals like calcium and magnesium in the water supply, and they can build up over time, especially in areas with hard water. While regular cleaning can help prevent the formation of these stubborn deposits, once they establish themselves, they can become quite a challenge to eradicate.
However, with the right approach and the use of certain household products, it is possible to restore your toilet to its original clean condition.
Step-by-Step Guide to Removing Thick Limescale and Hard Water Stains from Your Toilet
1. Begin with a simple flush. Ensure your toilet is flushed to remove any loose debris and to allow for a clear working surface.
2. Put on safety gloves. Cleaning products and homemade mixtures can be harsh on your skin, so it's best to protect your hands.