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Moumoujus

PULLULAN.

Valuable CAS 9057-02-7 / BINDING, FILM FORMING

Pullulan, a natural polysaccharide, forms a delicate, breathable film on the skin's surface, delivering an immediate tightening effect while significantly enhancing hydration. This multifunctional ingredient also supports skin elasticity and reduces the appearance of fine lines, contributing to a visibly firmer and more supple complexion.

Summary

Film-forming Humectant Viscosity Controlling Antioxidant Collagen Stimulator Elastin Stimulator Active Ingredient Carrier

Science

Mechanism of Action

Pullulan functions primarily by creating a thin, flexible, and semi-occlusive film on the skin. This film contracts upon drying, imparting an instant lifting and tightening sensation. Concurrently, it reduces transepidermal water loss (TEWL), thereby locking in moisture and maintaining optimal hydration levels. Beyond its film-forming and humectant properties, Pullulan acts as a 'carrier' to improve the delivery of other active ingredients. Furthermore, it exhibits antioxidant capabilities, may stimulate the production of collagen and elastin, and contributes to a healthier skin microbiome.

Research

Clinical Evidence

Medium confidence
Effective range 0.2–5%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

There is no research data indicating Pullulan is commonly 'dusted' or associated with 'dusting' concerns in skincare formulations.

The Formula

Formulation

Solubility
Water
Optimal pH 1 – 12
0 7 14

Stability

Pullulan is highly soluble in cold water and maintains stability across a wide pH range (1-12). Its aqueous solutions typically exhibit low viscosity, minimally impacting product texture. To ensure proper hydration, avoid high shear during initial mixing. Formulations should consider that the film formed by Pullulan may become sticky at relative humidity levels exceeding 80%; blending with other polymers like agar, alginate, or carrageenan can mitigate this effect for optimal performance in high-humidity environments.

Synergies

  • Other active ingredients (enhanced delivery)
  • Polymers like agar, alginate, or carrageenan (to prevent stickiness in high humidity)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Pullulan holds Generally Recognized as Safe (GRAS) status by the U.S. FDA for various applications, including cosmetics, and is generally regarded as non-toxic, non-irritant, non-immunogenic, non-mutagenic, and non-carcinogenic. Clinical patch testing involving 100 volunteers, including those with sensitive skin, confirmed its non-irritating nature, with 98% showing no signs of irritation. However, one specific study noted skin irritation after 48 hours upon exposure to a single patch containing a 4% pullulan solution in water. The EWG classifies Pullulan as 'Restricted' for EWG VERIFIED products without sufficient substantiation.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Pullulan is a valuable ingredient for Moumoujus, offering instant firming, significant hydration, and long-term anti-aging benefits for all skin types due to its unique film-forming and active-carrying capabilities.

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