I use a serum underneath my moisturiser on a daily basis, usually as a way of ramping up the moisture levels & treating my dehydrated skin. I've recently been using Caudalie Vinosource S.O.S. Thirst Quenching Serum, which I've heard recommended as a good, relatively affordable option thanks to the inclusion of glycerin.
As a general rule, I like Caudalie as a brand and whilst I initially discovered it through their body care products, I tend to trust French skincare. On first impressions, the packaging is both aesthetically pleasing and functional, thanks to the pump which allows for easy and controlled dispensing. Whilst I liked that the transparent packaging allowed me to tell how much was remaining, the glass bottle means that it's not ideal for travel.
Caudalie Vinosource S.O.S. Thirst Quenching Serum has exactly the kind of texture which I like in a serum. It's a lightweight milk which applied smoothly and was quickly & easily absorbed into skin. Once absorbed, I wasn't able to feel the serum on my skin. There was no tackiness or greasy residue, my skin simply felt smooth & hydrated. The serum has a fresh, pleasant scent.
Caudalie Vinosource S.O.S. Thirst Quenching Serum is oil-free but I wish that the formula was also free from silicones. It's this which would primarily put me off repurchasing. That said, the serum doesn't feel silicone laden or suffocating on skin.
I was pleased that it worked well under both moisturiser and makeup without inferring in the formulas or breaking up. My skin felt hydrated throughout the day and I didn't experience any breakouts when using this on my acne prone skin.
Caudalie Vinosource S.O.S. Thirst Quenching Serum isn't my favourite out of those I've tried but I feel that it is a good choice for those seeking a basic serum to tackle dehydration. I feel that £29 for 30ml is a reasonable price point for the product.