Question

to remove moisture from substance is used ​

Answer 1

Anhydrates, also known as desiccants, remove water, so are often used in drying agents, such as paper products. Silica gel is one of the most commonly used anhydrates

Answer 2

The substance used is dessicant.

Dessicant are substances that are hygroscopic in nature. Thus it removes or absorbs moisture from the substance.

Commonly used dessicants are silica powder, activated charcoal etc. The dessicants are usually done to preserve the objects or products that may get damaged due to presence of water.

Compounds that are used to provide moisture are humectant. They have opposite nature to dessicant.