Contact lens friendly, alcohol free and does not contain any ingredients of animal origin. Preservative & phosphate free with 6 months of sterility. Advanced spray technology with 300 accurately measured doses. To use, simply spray on closed eyes from a distance of 15-25cm. Also contains sodium hyaluronate to moisturise and sooth the eyelids which can help with itchy eyes and dry eye symptoms. Optase Dry Eye Spray contains omega 3 from sea buckthorn oil which strengthens the tear film lipid layer and protects the eye from drying out.