60mL, $50 CAD
This is one of Biotherm's new products !!
They had a similar one long long time ago, known as Aquasource Gel, but it was discontinued
The Aquasource Gel was very light and it's suitable for day time
The Deep Serum is somewhat similar, but it's a little thicker in texture
It contains thermal plankton, a substance found in hot springs
It also contains micro pearls to help improve brightness physically
However, oily skin people would probably want to stay away from products with pearls.. yeah.. as if your face is not shiny enough you need something to bring it out even more...
The smell is refreshing and it is non-greasy
I usually follow the serum with a moisturizer, but I find it not really necessary
This serum itself can serve as a moisturizer
With another moisturizer on top, it might feel a little heavy
Overall, I would say that this is a lovely product and I will for sure go for seconds !!