Update Friday, September 26, 2025.
Some 5 years after trying the below small sample of Bioderma Hydrabio Serum, I finally purchased the 40mL/1.3fl. oz. full size pump bottle earlier in the year and then quickly went through it in a few weeks.
This serum was much thicker than I remember. More like a translucent gel than a serum. And very moisturizing, so just perfect for the changing weather.
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Original post Sunday, April 19, 2020.
Almost done with this 5mL/0.17fl. oz. sample tube of Bioderma Hydrabio Serum so here's a quick post for it.
