Rhamnose Prebiotic sits in our formulas for one job: keeping reactive skin comfortable. We file it under Calming in this glossary because that is the effect its evidence actually supports, not because it is the most flattering label available.

Nurture in the flora

We make no efficacy claim for Rhamnose Prebiotic. Its role is functional, and our own note against it reads: (function: prebiotic sugar; no efficacy claim). A functional ingredient dressed up as an active is still a functional ingredient, so we leave it described as what it is.

Nurture in the evidence

No study is cited here because no efficacy claim is made. That is a deliberate entry in this glossary rather than a gap in it.

Nurture and its limits

Rhamnose Prebiotic is included for how it makes a formula behave, not for what it does to skin. Anyone telling you otherwise about an ingredient of this type is selling something.