The new serum is absolutely superior to the original serum. The instructions were good, except the application instructions were not so helpful. In the original serum instructions the application instructions said to use half the size of a pea. Obviously there are many different sizes of peas and they didn't say whether that was for one or both eyes. The new serum instructions left out the pea, but still did not specify whether the amount suggested was for one or both eyes. On another note, while the first application worked well, except for maybe my uneven stroke of the product, but touchup application of the missed areas, using the same thin layer, produced a milky crackled layer. Now whether I may not have understood the application it did not address that issue. I think you have a really good product but the writers need to step it up. Thank you!