Xailin Fresh Carmellose 0.5% w/v Eye Drops soothe and relieve mild, moderate and severe dry eye symptoms such as redness, soreness, itchiness, grittiness and burning sensations. They contain the active ingredient carmellose, a lubricating ingredient that hydrates and nourishes the surface of the eye to alleviate the symptoms of dry eyes. It may also be used as a contact lens hydrating solution.nXailin Fresh Carmellose 0.5% w/v Eye Drops are preservative free and are supplied in convenient single dose units that are sterile until opened.