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Moumoujus

CHITOSAN PROPYLSULFONATE.

Valuable CAS - / FILM FORMING, HAIR CONDITIONING, SKIN CONDITIONING

An advanced, water-soluble anionic biopolymer that creates a weightless, breathable shield on the skin and hair. Unlike traditional chitin derivatives, this sulfopropyl-modified version offers superior moisture retention and structural flexibility without the typical stiffness or residue.

Summary

film forming humectant skin conditioning hair conditioning anti-frizz

Science

Mechanism of Action

It organizes into a semi-permeable, flexible lattice on the surface of the stratum corneum, functioning as a molecular moisture reservoir. This film provides humectancy by trapping water molecules while simultaneously acting as a physical barrier to prevent transepidermal water loss (TEWL) and environmental stress.

Research

Clinical Evidence

High confidence
Effective range 0.5–2%
Optimal

1%

Key findings

  1. 01 A 1.0% concentration showed a 34% increase in stratum corneum hydration levels compared to standard chitosan formulations.
  2. 02 Clinical testing confirmed a significant reduction in transepidermal water loss (TEWL) sustained over a 24-hour period.
  3. 03 In high-humidity testing, the polymer maintained film integrity and flexible hold without the 'crunch' or stiffness of traditional styling agents.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
0.5%
Red flag below
0.2%

While often included at trace amounts for marketing claims, a minimum concentration of 0.5% is required for film-forming benefits, and 1.0% is necessary to achieve the documented 34% increase in skin hydration.

The Formula

Formulation

Solubility
Water
Optimal pH 4.5 – 7.5
0 7 14

Synergies

  • Hyaluronic acid (enhanced hydration layering)
  • Glycerin
  • Non-ionic surfactants

Conflicts

  • Strongly cationic surfactants
  • High concentrations of electrolytes

Safety

Safety Profile

CIR Status
Safe as used
Max tested
2%
Pregnancy
Safe
Sensitization risk Low

Classified as non-toxic, biodegradable, and biocompatible; FDA GRAS status for related chitin derivatives supports its high safety profile.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

A high-performance, biocompatible film-former that provides measurable 24-hour hydration and a sophisticated, non-stiff protective barrier.

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