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Moumoujus

HYDROLYZED STARCH.

Valuable CAS 34612-38-9 / HUMECTANT, SKIN CONDITIONING, SKIN PROTECTING

Hydrolyzed Starch is a versatile ingredient derived from natural starches, meticulously processed to enhance its beneficial properties for the skin. It functions primarily as a potent humectant, delivering long-lasting hydration, while also improving skin texture and promoting a refined, matte finish.

Summary

Humectant Skin conditioning agent Binding agent Viscosity controlling agent Oil-absorbing agent Film former Rheology modifier Foam enhancer

Science

Mechanism of Action

This ingredient operates by forming a breathable, protective film on the skin's surface, effectively retaining moisture for sustained hydration. Its unique structure enables it to absorb excess oil, contributing to a desirable matte appearance. Furthermore, Hydrolyzed Starch plays a crucial role in formulation stability and aesthetics, acting as a binding agent, controlling viscosity, and enhancing the overall feel and spreadability of products. It can also improve foam quality in cleansing formulations.

Research

Clinical Evidence

Medium confidence
Effective range 1–5%
Optimal

Generally effective within 1-5% concentrations for skin benefits; higher for binding.

Key findings

  1. 01 Incorporated with 0.1-1% Hyaluronic Acid, it optimizes hydration and skin-plumping effects.
  2. 02 When combined with Vitamin C, it boosts antioxidant efficacy, contributing to a radiant complexion.
  3. 03 Starch nanoparticles, prepared via acid hydrolysis, were non-irritating in human skin cells, 3D artificial skin, and human skin, highlighting their safety as natural emulsifiers for sensitive skin.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 7
0 7 14

Stability

Hydrolyzed Starch is water-soluble, exhibiting optimal stability within a pH range of 4.0 to 7.0. While its glycosidic bonds are generally stable in alkaline conditions, they can become vulnerable to acid or base hydrolysis at elevated temperatures. General starch structures may also experience instability under extreme pH or high shear.

Synergies

  • Hyaluronic Acid (for enhanced hydration and plumping)
  • Vitamin C (for boosted antioxidant efficacy and radiance)

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed corn-derived ingredients, including Hydrolyzed Corn Starch, safe for cosmetic use in the practices of use and concentration described in their assessment. Maltodextrin, a related partially hydrolyzed starch, is affirmed as Generally Recognized As Safe (GRAS) by the FDA. While a maximum concentration of 7.5% was noted for a modified starch (Distarch Phosphate) in leave-on products, a specific maximum concentration for Hydrolyzed Starch by CIR has not been explicitly defined, though it is considered safe under typical cosmetic use.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Hydrolyzed Starch is a valuable multifunctional ingredient, offering effective hydration, oil control, and significant formulation benefits, making it suitable for a broad range of skin types and product applications.

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