Po
Polyquaternium-51
Polyquaternium-51Hydrator
A moisturizing ingredient. A close relative of it, paired with hyaluronic acid, raised skin’s water content in one study.
What it does
It dissolves in water and is built from phosphorylcholine, a building block of cell membranes.
The evidence, graded
emergingThe one study Drop cites tested pMPC, a phosphorylcholine polymer, not Polyquaternium-51 itself; Drop reads the two as close relatives. In skin models, pMPC raised water in the outer skin layer most when it was put in microcapsules with hyaluronic acid. A test on 26 volunteers matched the lab results. The abstract gives no numbers.Chrit 2007 · Biopolymers ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Also known as
phosphorylcholine polymer, pMPC
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