I started using Deep Marine in the hopes that it would help with painful arthritic hands. Within 5-6 weeks, I noticed some definite relief, but also noticed my skin seemed a little more firm, my hair felt stronger ( I have very fine hair), not as much breakage, and my nails are considerably stronger. I mix it into a glass of lemon water first thing in the morning. It dissolves nicely, and there is no after taste. I highly recommend it!