I haven't known about ampoule before. This is my first time to try and Pyungkang Yul isn't let me down. I feel it's more hydrated than serum but not left any feel sticky on my skin. Some night just apply only this ampoule is enough for me. Love it!

I use this like one would use the J.One Jelly Pack and it is great in sealing in moisture and making the skin supple and prepared for makeup. It needs practice in application but it is easy to learn how to do so. I wish however that the applicator/dropper is bigger or better as it is hard to get product using it.