Leafy greens and herbs were eaten as salads with vinegar dressings. In foods, xanthan gum is common in salad dressings and sauces. It is also an ingredient of many potato salads, barbecue sauces, and salad dressings. It is also used as an ingredient in many dressings, glazes, sauces, soups, and marinades. Sauces for salads are called "dressings". In the food industry, xanthan is used in products such as dressings and sauces. It is used as a spice or condiment in pastas, salads and dressings, and desserts. The sandwich is sometimes served with dressings, like mayonnaise. Commonly used antiseptics include povidone-iodine, boracic lint dressings or historically castor oil. Some of the dressings have antiseptic properties. Nonetheless, fomites may include soiled clothes, towels, linens, handkerchiefs, and surgical dressings. Cochrane reviews summarise evidence on alginate dressings , foam dressings , and hydrogel dressings. One major use is as an absorbent in surgical dressings. Chitosan is used within some wound dressings to decrease bleeding. Granular bentonite is being studied for use in battlefield wound dressings.