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PEG-8 AMODIMETHICONE.

Valuable CAS 182700-78-3 / HAIR CONDITIONING

PEG-8 AMODIMETHICONE is a water-soluble silicone copolyol, closely related to PEG-8 Dimethicone, noted for its skin-conditioning and emollient properties. It works to enhance skin hydration by forming a protective barrier and improving the overall sensory experience of formulations.

Summary

Emollient Skin conditioning Improves cushion, texture, and slip in the formula

Science

Mechanism of Action

Drawing insights from the closely related PEG-8 Dimethicone, PEG-8 AMODIMETHICONE functions primarily as an emollient by creating a lightweight, protective film on the skin's surface. This barrier helps to reduce transepidermal water loss, effectively sealing in hydration. Beyond hydration, it significantly improves the aesthetic qualities of a formulation, imparting a silky feel, enhanced cushion, smoother texture, and improved slip, while also helping to reduce stickiness from other ingredients.

Research

Clinical Evidence

Low confidence
Effective range 1–5%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4.5 – 5.5
0 7 14

Stability

Optimal stability is observed within a pH range of 4.5-5.5. As a water-soluble ingredient, it should be incorporated into the water phase of a formulation. To maintain its integrity, avoid heating above 50°C (122°F); it can also be added to emulsions once the temperature has cooled below this threshold.

Synergies

  • most cosmetic raw materials
  • polar solvents

Conflicts

  • some non-polar organic solvents
  • some silicone solvents

Safety

Safety Profile

CIR Status
Safe as used
Max tested
85%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed polyethylene glycols (PEGs) and their derivatives, including the closely related PEG-8 Dimethicone, safe for cosmetic use. Studies on Dimethicone Copolyol, a broader category, indicate it is non-irritating and non-sensitizing. PEG-8 Dimethicone is considered non-toxic and non-comedogenic, with a maximum reviewed concentration of 85% for related PEG-8.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-8 AMODIMETHICONE is a valuable emollient and skin-conditioning agent, enhancing skin feel and hydration across all skin types, with a low risk of irritation and comedogenicity.

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