Linen is hypoallergenic and antibacterial, naturally!
Few chemicals are involved in the production of linen, so it's a particularly good fabric for people with allergies or sensitive skin. Using a Deck Towel to dry helps avoid allergic reactions that can occur with other fabrics, especially synthetics.
The dense molecular make up the linen fiber resists not only stains and dirt, but also inhibits the growth of bacteria. It is one of the world's "purest" fabrics. Hospitals have long used linen to prevent infections; indeed, linen thread is the only suture approved for internal use in the human body!