I suffer from dry eye and by the end of the day my eyes feel so gritty and dry but they feel so much better after using these masks. They are so soft and just the right size with a hint of scent. My eyes feel better with less grittiness after just one use. I haven’t needed to use these yet for sinus issues, but I am completely confident that when I do, these masks will be very helpful! What stress relief! When the going gets tough, just lay back, put on your eye masks and feel the stress melt away. I will never be without these again!