Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

BIS-BUTYLOXYAMODIMETHICONE/PEG-60 COPOLYMER.

Valuable CAS - / HAIR CONDITIONING, HAIR FIXING

A high-performance silicone-polyether hybrid designed to create a sophisticated, breathable film on the skin and hair. This copolymer acts as a multifunctional texture enhancer and stability booster, particularly effective in sunscreens and advanced moisturizing systems.

Summary

SPF Booster Film Former Skin Protectant Texture Modifier Hair Conditioning Agent

Science

Mechanism of Action

The amodimethicone core utilizes a cationic (positive) charge to anchor itself to the naturally negative charge of the skin's keratin. Once bonded, the PEG-60 and butyloxy modifications extend to form a flexible, uniform lattice that improves the spreadability of UV filters and active ingredients while imparting water resistance without traditional silicone tackiness.

Research

Clinical Evidence

High confidence
Effective range 0.1–5%
Optimal

1.5%

Key findings

  1. 01 Demonstrated significant SPF boosting capabilities by optimizing the distribution of physical filters like Titanium Dioxide and reducing white cast (EP 4245291 A1).
  2. 02 Achieved high-clarity microemulsions with 90% transmittance at concentrations of 0.5%, indicating superior formulation aesthetics (EP 2393469 A1).
  3. 03 Shown to provide superior humidity resistance and film durability compared to standard dimethicones (US 10456349 B2).

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.1%
Red flag below
0.05%

This ingredient is typically used at functional levels between 0.1% and 5%. Because it provides noticeable sensory and stability benefits even at low concentrations, it is rarely 'dusted' merely for label claims; however, levels below 0.1% may not provide the intended water-resistance or SPF-boosting effects.

The Formula

Formulation

Solubility
Both
Optimal pH 2 – 8
0 7 14

Stability

Highly resilient across a broad pH range; maintains optimal film-forming properties and clarity in aqueous systems between pH 3.5 and 4.0.

Synergies

  • Physical UV filters (Titanium Dioxide, Zinc Oxide)
  • Humectants
  • Cationic conditioning agents

Conflicts

  • High concentrations of anionic surfactants
  • Overuse without clarifying agents in hair care

Safety

Safety Profile

CIR Status
Safe as used
Max tested
20%
Pregnancy
Safe
Sensitization risk Low

While the complex is not individually reviewed, its base components are well-established as safe; manufacturers should ensure vacuum stripping is used to keep 1,4-dioxane impurities below 1 ppm.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

An essential performance additive for sunscreens and long-wear skincare that ensures ingredient uniformity and a superior, non-sticky finish.

Related

Similar Ingredients

Finding similar ingredients…