Senna spread through tropical regions at the time of the colonies. While it may not be as much in vogue as it once was, it continues to be one of the most imported medicinal plants. These days, senna is used externally to treat skin problems.
Senna seed extract is rich in polysaccharides. It helps to maintain the skin’s hydration by forming a protective film on its surface. It also helps the skin to retain its suppleness.