Biologique Recherche Serum Yall-O2
Biologique Recherche
Serum Yall-O2
Expert recommendations
Expert recommendations
  • Erin Parsons

    Erin Parsons

    Makeup artist | 43 years old

    September 21, 2021

    I put one more serum on top—it's called the Yall-O2—just to add that extra layer of moisture just when I'm feeling really dry in that area.source

  • Kelly Wearstler

    Kelly Wearstler

    American designer | 54 years old

    November 1, 2021

    It really helps with any fine lines and is a great renewal product.source