Caractéristiques
- INCI
- Sodium Hyaluronate
- CAS
-
9067-32-7
Il s'agit du numéro de la substance dans le registre du Chemical Abstracts Service. Le numéro CAS identifie de manière unique une substance indépendamment de la langue, du nom commercial ou des synonymes.
- IUPAC
- Hyaluronic Acid, Sodium, Salt
- Fonctions
- humectant, skin conditioning
- Irritation
-
0 / 5
Potentiel d'irritation: 0-5, où 5 est la cote d'irritation la plus élevée pour l'ingrédient.
Plus de détails → - Comédogène.
-
0 / 5
Indice de comédogénicité: 0-5. Il est peu probable qu'un ingrédient non comédogène (0-1) provoque de l'acné cosmétique.
Plus de détails →
Для кого подходит
Descriptif
It’s the - sodium form - cousin of the famous NMF, hyaluronic acid (HA). If HA does not tell you anything we have a super detailed, geeky explanation about it here. The TL; DR version of HA is that it's a huge polymer (big molecule from repeated subunits) found in the skin that acts as a spongehelping the skin to hold onto water, being plump and elastic. HA is famous for its crazy water holding capacity as it can bind up to 1000 times its own weight in water.
As far as skincare goes, sodium hyaluronate and hyaluronic acid are pretty much the same and the two names are used interchangeably. As cosmetic chemist kindofstephen writes on reddit "sodium hyaluronate disassociates into hyaluronic acid molecule and a sodium atom in solution".
In spite of this, if you search for "hyaluronic acid vs sodium hyaluronate" you will find on multiple places that sodium hyaluronate is smaller and can penetrate the skin better. Chemically, this is definitely not true, as the two forms are almost the same, both are polymers and the subunits can be repeated in both forms as much as you like. (We also checked Prospector for sodium hyaluronate versions actually used in cosmetic products and found that the most common molecular weight was 1.5-1.8 million Da that absolutely counts as high molecular weight).
What seems to be a true difference, though, is that the salt form is more stable, easier to formulate and cheaper so it pops up more often on the ingredient lists.
If you wanna become a real HA-and-the-skin expert you can read way more about the topic at hyaluronic acid (including penetration-questions, differences between high and low molecular weight versions and a bunch of references to scientific literature).
Trouvé dans les produits (44 256 total des dépenses)
Наиболее часто встречается в продукции L'Oreal (246 продуктов)
