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PROPANEDIOL CAPRYLATE.

Valuable CAS 102731-54-4 / SKIN CONDITIONING

Propanediol Caprylate is a naturally derived ester recognized for its precision in addressing multiple skin and scalp concerns. It effectively acts as an antimicrobial agent, controls sebum production, and provides essential skin conditioning, promoting a balanced and healthy complexion.

Summary

anti-dandruff antimicrobial anti-seborrheic skin conditioning humectant

Science

Mechanism of Action

This ingredient functions by targeting Malassezia fungi, a primary contributor to dandruff, through an enzymatic cleavage process by fungal lipases that releases caprylic acid. This liberated acid subsequently reduces Malassezia activity via an auto-kill mechanism. Beyond its anti-dandruff action, Propanediol Caprylate modulates the scalp's bacterial microbiota, restoring a healthier balance of Cutibacterium and Staphylococcus. It also serves as an anti-sebum agent, precisely regulating sebaceous gland emissions to reduce greasiness, which is beneficial in acne management. Furthermore, its propanediol component imparts humectant properties, aiding in skin hydration and reinforcing the skin's natural tolerance and condition.

Research

Clinical Evidence

High confidence
Effective range 0.5–1%
Optimal

0.5%

Key findings

  1. 01 A mixture containing Propanediol, Caprylic Acid, and Xylitol (PXCA) at 0.5% and 1.0% was clinically proven to reduce inflammatory acne lesions and facial redness over 14-28 days. This blend also decreased 5-alpha reductase expression by 24% and lowered skin oiliness, demonstrating strong antimicrobial activity against C. acnes (MIC 0.125%) and Staphylococcus aureus (MIC 0.25%).
  2. 02 An exploratory in vivo study showed a significant reduction of dandruff with a 0.5% concentration in a leave-on formulation over 4 weeks.
  3. 03 In a 30-day rinse-off shampoo study, Propanediol Caprylate at 0.5% significantly reduced dandruff, achieving results comparable to the established anti-dandruff ingredient climbazole at an identical dosage.
  4. 04 Formulations containing Propanediol Caprylate at 0.5% to 1.0% demonstrated improved foam stability in shampoos, contributing to enhanced cleansing properties and a softer skin feel.

Transparency

Dusting Analysis

Not commonly dusted

Propanediol Caprylate is a multi-functional active ingredient with clearly defined mechanisms and robust clinical evidence supporting its efficacy at concentrations between 0.5% and 1.0% for various skin and scalp benefits, including dandruff control and sebum regulation. Its established role as an active component makes it highly improbable to be used at sub-efficacious 'dusting' levels.

The Formula

Formulation

Solubility
Oil
Optimal pH 4.5 – 5
0 7 14

Stability

As an oil-soluble ester of caprylic acid and 1,3-propanediol, Propanediol Caprylate is stable within shampoo formulations, maintaining optimal performance in a pH range of 4.5 to 5.0 (specifically 4.8 ± 0.2). It is a clear, colorless liquid, simplifying its integration into oil-based or oil-miscible cosmetic systems.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

A formal safety assessment by regulatory bodies such as the Cosmetic Ingredient Review (CIR), Scientific Committee on Consumer Safety (SCCS), or FDA specifically for Propanediol Caprylate is not currently available in the provided data. However, independent assessments indicate a low irritancy potential.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Propanediol Caprylate is a valuable, bio-derived active ingredient that effectively targets dandruff, reduces oiliness, and supports a balanced skin and scalp microbiome, all while maintaining a low irritancy profile.

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