Question 1

What does Sodium Dextran Sulfate do in a cosmetic formula?

Accepted Answer

It is mainly a skin-conditioning and film-forming polymer, used to give a smooth, hydrated feel and a light anionic film on skin or hair. It can also support viscosity and suspension behavior in water-based formulas.

Question 2

Is Sodium Dextran Sulfate clean?

Accepted Answer

This ingredient is not a typical restricted-list trigger in clean-beauty frameworks, and its large polymer size suggests low skin penetration. The main checks are supplier purity, residual processing materials, salts, and claims tied to biological activity rather than classic allergen concerns.

Question 3

Is Sodium Dextran Sulfate sustainable?

Accepted Answer

This material commonly starts with a fermentation-derived glucose polymer, then undergoes substantial chemical functionalization. The renewable backbone is favorable, while biodegradability and aquatic fate are less straightforward than for unmodified carbohydrates because dense anionic substitution can slow breakdown.

Question 4

Is Sodium Dextran Sulfate COSMOS-approved?

Accepted Answer

This ingredient can be permitted under COSMOS-natural when supplier documentation confirms compliant origin, processing, and residuals, but it is not automatically COSMOS-organic. Its Green Chemistry profile is mixed, with a renewable polymer backbone balanced against reagent-intensive modification, salt waste, and limited ready-biodegradation clarity.

Question 5

How does Sodium Dextran Sulfate work chemically?

Accepted Answer

The molecule is a high-molecular-weight, water-soluble anionic glucose polymer bearing ester-linked sulfur oxyacid groups with sodium counterions. Performance depends strongly on molecular weight and charge density, and it is generally best used in aqueous systems where high electrolyte load, cationic ingredients, or low pH can affect compatibility and viscosity.