The U.S. National Ocean Service notes that, due to the plant's anti-inflammatory and anti-microbial agents, seaweed has been used in ancient cultures to treat wounds, burns and rashes, with Egyptians ...

While the seaweed might look unpleasant, health experts say it is largely non-harmful to humans. Tiny creatures that bury in the globs can produce rashes and blisters if contact is made with the skin.