too early to tell but the applicator is well thought out and easy to apply.
Am a stock market trader, so do the math. Under-eye circles are de-riguer. They come with the stress of the job. Up at 4:30a, work til midnight. Noticed black circles under my eyes were not going away on their own. Tried your other products and liked them. They delivered. Tried the product on a lark. And, to my surprise, it worked. In about a week, I noticed the dark circles weren't as dark. Not sure how it works. Nor do I care. Just glad it does.
Use this for an instant under-eye lift. There have been many mornings I've woken up with with tired-looking eyes. Though this won't fix your hangover it will leave you looking like the night before had no impact on your skin. Good luck with that headache though.