Different than expected, but decent.
I love all mystical themed things, so I admit that I solely purchased this product because it was called "Crystal Ball Serum". I didn't realize that it was a roll-on application when I bought it, so I was a little disappointed when I opened it and saw that. (It does show on the packaging that it's a roller, but I bought this online and it wasn't shown). While I think it's a nice touch having the roller be an amethyst crystal, I'm a little uneasy about the sanitation. I would rather apply a product to my face with my hands (which are always cleaned beforehand) or a cotton pad. Although I always use this serum after cleansing my face, I'm still worried that bacteria/dirt is going to get on the roller.
The scent of this serum also took me by surprise. It wasn't what I expected at all. The smell doesn't fit with the name at all. It smells strongly like watermelon and reminds me of summer. It smells good, but it just doesn't fit with the name/packaging.
One good thing about this serum is that it absorbs into the skin very quickly and doesn't leave any film or residue leftover. It seems to help hydrate and soften my skin. I use this after toner and before face oil/moisturizer.