I've been using the Premier Dead sea products. They are good products, but I've had mine for two years and it's losing it's effectiveness. I definitely felt it worked better the first year. The salesperson told me they would last for 3 years. I no longer believe him. I have the eye cream and the serum. They both came in Costco size, not sure why this was necessary, other than to justify cost? The serum is almost gone, but the eyecream is not even a quarter gone. It's an eyecream, and a little goes a long way. I'm contemplating using the rest of the jar on my feet, since I'm ready to try something new.