Sodium Polynaphthalenesulfonate
A polymer dispersant. It keeps pigments and mineral particles suspended and prevents clumping. Well tolerated.
Supporting ingredient
It gives a product its texture, stability or shelf life. It has no claimed effect on the skin, so an efficacy tier does not apply. What is known about its safety is below
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Sodium Polynaphthalenesulfonate is a polymer that acts as a dispersant. It keeps pigments and mineral particles evenly suspended and stops them clumping, which helps coloured products and mineral filters look and apply uniformly. This is a functional ingredient, not a skincare active. It does not treat the skin; its job is dispersion stability and even spread of pigment or mineral. A recognised technical role in makeup and sunscreen formulation. Applied topically there is no meaningful systemic absorption, so it can be used during pregnancy and breastfeeding. Tolerance is good: low irritation and allergy potential, compatible with sensitive skin. It is used in small proportions, and as an auxiliary polymer it rarely causes a skin reaction.
Frequently asked questions
Is Sodium Polynaphthalenesulfonate safe during pregnancy?
Sodium Polynaphthalenesulfonate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Sodium Polynaphthalenesulfonate for?
Sodium Polynaphthalenesulfonate suits: normal, dry, combination, oily, sensitive.
What is Sodium Polynaphthalenesulfonate and what does it do in cosmetics?
A polymer dispersant.
What's the INCI name for Sodium Polynaphthalenesulfonate?
The INCI name is Sodium Polynaphthalenesulfonate.
See Sodium Polynaphthalenesulfonate in a product composition right on the store page
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Similar role in the formula
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