Biotherm Aquasource Bounce Flash Mask 31 g

To me, this product has more of a lightweight lotion feel to it than a serum, and I've been using it like a lotion in my skin care routine in the mornings. After cleansing, I use this over an HA serum and before sunscreen. It adds a nice amount of moisture without being oily, and I find it's been doing a nice job of protecting my skin against the elements now that winter (and all the dry air) is here. I've also used this at nighttime on occasion after applying prescriptions retinol, for a bit of extra moisture. It's also very reasonably priced ($35 CAD for 50 ml) and does a great job of keeping my skin hydrated. A solid performer.