Database/Humectant/Sodium Hyaluronate Crosspolymer
Mostly natural · ISO 16128

Is Sodium Hyaluronate Crosspolymer natural?

Mostly. Backbone is fermentation-derived hyaluronic acid; only a small mass fraction is the petrochemical divinyl-sulfone crosslinker.

INCI nameSodium Hyaluronate Crosspolymer
CAS105524-32-1
FunctionHumectant · Skin Conditioning
FeedstockBacterial-fermentation sodium hyaluronate is lightly crosslinked with divinyl…

How we scored it

Assumed ~1 divinyl sulfone crosslink per 10 HA disaccharide units (423 Da each, natural): 4230/(4230+118) = 0.97
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Bacterial-fermentation sodium hyaluronate is lightly crosslinked with divinyl sulfone, a petrochemical reagent, to form a stable gel network. Exact crosslink density varies by supplier.

In plain English

A gel-forming, moisture-binding ingredient made from fermented hyaluronic acid that has been lightly stitched together with a synthetic crosslinking chemical for a more stable, longer-lasting gel.

CosIng definition: Hyaluronic acid, sodium salt, polymer with 1,1'-sulfonylbis[ethene]

Natural alternatives with the same function

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2SODIUM HYALURONATE CROSSPOLYMER. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3SODIUM HYALURONATE CROSSPOLYMER. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20HYALURONATE%20CROSSPOLYMER