Which among the following elements is used in moisturising creams and soaps because of its hygroscopic properties?

Glycerol

The correct answer is option 4. Glycerol.

The element used in moisturizing creams and soaps because of its hygroscopic properties is Glycerol.

Glycerol, also known as glycerin, is a common ingredient in moisturizing creams and soaps due to its hygroscopic properties. It attracts and retains moisture from the environment, helping to keep the skin hydrated and preventing it from drying out. Therefore, glycerol is widely used in skincare products to provide moisturizing effects.