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Moumoujus

SD ALCOHOL 3-B.

Insufficient Data / ASTRINGENT, SOLVENT, VISCOSITY CONTROLLING

SD Alcohol 3-B is a specific form of denatured ethanol, modified with pine tar to prevent internal consumption. It functions primarily as a versatile solvent, rapidly evaporating to deliver a light skin feel, and acts as an astringent to temporarily tighten pores while effectively removing excess surface oils.

Summary

Solvent Astringent Antifoaming Agent Viscosity Decreasing Agent Penetration Enhancer Antimicrobial

Science

Mechanism of Action

SD Alcohol 3-B acts as a powerful solvent, efficiently dissolving other components within cosmetic formulations. On the skin, it serves as a cosmetic astringent, causing temporary skin contraction and pore tightening by interacting with keratin proteins. Its rapid evaporation provides a lightweight finish and aids in removing surplus natural oils. Furthermore, it can function as a penetration enhancer, potentially improving the deeper delivery of other active ingredients, and exhibits inherent antimicrobial properties. It also contributes to formulation stability as an antifoaming and viscosity-decreasing agent.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Minimal irritation effects (SD Alcohol 40-B).
  2. 02 Non-irritating in vaginal mucosal irritation test (SD Alcohol 40-B).
  3. 03 No photoallergy, dermal sensitization, or phototoxic response (SD Alcohol 40-B).
  4. 04 No photoallergy, dermal sensitization, or phototoxic response (SD Alcohol 40-B).

Transparency

Dusting Analysis

Not commonly dusted

The provided research does not specifically detail a 'dusting' threshold for SD Alcohol 3-B. However, high concentrations of alcohol generally carry the risk of stripping natural skin oils and disrupting the skin barrier, which can lead to dryness and irritation, particularly for sensitive skin types.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

As a type of denatured ethanol, SD Alcohol 3-B is inherently volatile and readily miscible with water, also possessing the ability to dissolve oils. No specific optimal pH range for the stability of SD Alcohol 3-B or its pine tar denaturant was identified in the research.

Synergies

  • Acts as a penetration enhancer, potentially improving the delivery of other active ingredients.

Conflicts

  • High concentrations can strip natural oils, disrupt the skin barrier, and potentially trigger inflammation.
  • May enhance the penetration of other ingredients, which could inadvertently increase the absorption of xenobiotics or irritants present in the formulation.

Safety

Safety Profile

CIR Status
Insufficient data
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has found other SD Alcohols (e.g., 3-A, 30, 39-B, 39-C, 40-C) denatured with specific substances (t-Butyl Alcohol, Diethyl Phthalate, Methyl Alcohol) to be safe for cosmetic use. However, the CIR Expert Panel's data on denaturants such as Quassin, Brucine, and/or Brucine Sulfate was deemed insufficient to support their safety. SD Alcohol 3-B is specifically denatured with pine tar, and the provided information does not contain an explicit CIR report addressing the safety of pine tar as a denaturant for this specific alcohol type. While the FDA generally considers 'SD Alcohol' acceptable in cosmetics, a specific SCCS status for SD Alcohol 3-B was not found.

Your Skin

Skin Compatibility

No Normal
No Dry
Yes Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Insufficient Data

While offering functional benefits as a solvent, astringent, and penetration enhancer, the absence of specific safety data from the CIR Expert Panel regarding its pine tar denaturant means there is insufficient information to provide a conclusive safety and efficacy verdict for SD Alcohol 3-B.

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