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Moumoujus

LAURDIMONIUM HYDROXYPROPYL HYDROLYZED WHEAT STARCH.

Valuable / ANTISTATIC, HAIR CONDITIONING

This quaternary ammonium compound forms a protective film on the skin, effectively enhancing moisture retention and fortifying the skin's natural barrier. It contributes to a softer, smoother skin texture while offering soothing and calming benefits for sensitive and dry skin types.

Summary

Moisturizing Agent Skin Protectant Barrier Support Soothing Agent Hair Conditioner Antistatic Agent

Science

Mechanism of Action

Functioning as a positively charged quaternary ammonium molecule derived from hydrolyzed wheat protein and ammonium hydroxide, Laurdimonium Hydroxypropyl Hydrolyzed Wheat Starch establishes a protective layer on the skin's surface. This film significantly reduces transepidermal water loss, thereby maintaining optimal hydration and preventing dehydration. It actively supports and strengthens the skin's crucial barrier function, offering enhanced resilience against environmental stressors like pollution and temperature fluctuations. Additionally, it imparts a noticeable improvement in skin texture, promoting a sensation of softness and smoothness, alongside its described nourishing, soothing, and calming properties.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The hydroxypropylation of starches enhances this ingredient's stability and water solubility. This modification further improves characteristics such as swelling power, paste consistency, clarity, and overall freeze-thaw stability within formulations.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed this ingredient safe for use in cosmetics when specific formulation restrictions are strictly adhered to. Products must ensure peptides have a weight-average molecular weight of 3500 Daltons or less, with polypeptide lengths not exceeding 30 amino acids. Furthermore, it should not be applied to damaged skin, included in products that may contact mucous membranes, or used in formulations that could be incidentally inhaled. A similar derivative, Laurdimonium Hydroxypropyl Hydrolyzed Wheat Protein, has been noted to elicit strong positive reactions in skin prick tests in some cases, indicating a potential for sensitization, particularly with higher molecular weight peptides. While the EWG Skin Deep database rates general concerns as 'LOW', it explicitly defers to CIR recommendations for use.

Your Skin

Skin Compatibility

No Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Laurdimonium Hydroxypropyl Hydrolyzed Wheat Starch is a valuable ingredient for improving skin hydration, barrier function, and texture, particularly beneficial for dry and sensitive skin, provided strict adherence to CIR formulation guidelines regarding peptide size and application.

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