Review title is Ball applicator interesting, but ineffective - leaked a lot in shipping [SEP] This is one of those things where I can't really tell if it's working for a long time, so I'm not even going to comment on the benefits of the serum itself since I didn't notice any de-puffing, or improved skin tone.<br /><br />When I received this, the little storage pouch was damp, which I thought was odd. I opened it, and there was a little moisture around the cap which was also sealed in plastic. Now, I live in Denver, so I'm not really sure if the leakage was caused by the the item being moved to higher elevation - we're used to that kind of thing here - but I don't really know how much of the product I lost due to leakage. I can say for sure though, that at just 10 ml for the whole bottle, I lost at least 10% of the product, and I think it's a safe guess to put it between 20-30% or more.<br /><br />As for the ball roller, I found it uncomfortable to use on my eyes, so I actually just rub it on my finger tips and apply it from there. I do feel like that prevents over-usage as I've had with other Hyaluronic Acid creams which tend to go a LONG way, and can be hard to use as sparingly as is appropriate.<br /><br />Bottom line - the roller ball applicator is a novelty, but I wouldn't order this one again.