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SD ALCOHOL 27-B.

Insufficient Data / ASTRINGENT, SOLVENT, VISCOSITY CONTROLLING

SD Alcohol 27-B is a denatured ethyl alcohol, functioning primarily as a cosmetic solvent and a quick-drying agent. It also contributes astringent, antimicrobial, and penetration-enhancing properties to formulations.

Summary

Solvent Astringent Antimicrobial Penetration Enhancer Viscosity Controlling

Science

Mechanism of Action

SD Alcohol 27-B acts as an effective solvent, dissolving other components within cosmetic formulations. On the skin, it temporarily enhances the permeability of the stratum corneum by interacting with lipids and proteins, thereby facilitating the absorption of other ingredients. It provides an astringent effect, leading to a quick-drying, refreshing feel and a matte appearance by helping to neutralize surface oils. Additionally, it serves as an antimicrobial agent to disinfect the skin and as a preservative to extend product shelf-life, while also improving formula texture and stability.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 No significant inflammatory changes for ethanol.
  2. 02 No increase in redness, irritation, or impact on skin barrier function for ethanol-based hand sanitizers.
  3. 03 Non-irritating for SD Alcohol 40-B in specific tests.
  4. 04 No photoallergy, dermal sensitization, or phototoxic response for SD Alcohol 40-B.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Ethanol, the primary component of SD Alcohol 27-B, is generally stable and contributes to overall formula texture and stability.

Conflicts

  • Can lead to excessive dryness and disrupt the skin barrier, especially with frequent use or in high concentrations.
  • As a penetration enhancer, it can increase the absorption of other ingredients, which could potentially be harmful depending on the co-ingredients' nature and concentration.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk High

SD Alcohol 27-B is ethyl alcohol denatured with lavender oil and medicinal soft soap (green soap), a specific combination not explicitly reviewed by the Cosmetic Ingredient Review (CIR) Expert Panel. While other SD alcohols have been deemed safe at concentrations between 0.05% and 12% with specific denaturants (e.g., t-Butyl Alcohol, Denatonium Benzoate), the safety of SD Alcohol 27-B is predicated on its unique denaturant blend. This specific denatured alcohol is 'Not rated' by some industry resources due to this lack of direct review, raising concerns for sensitive individuals due to its denaturants and general irritancy profile.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

Despite its functional benefits as a solvent, astringent, and penetration enhancer, the high irritancy potential and the absence of specific CIR review for its unique denaturant blend render SD ALCOHOL 27-B an ingredient with insufficient data for a confident recommendation in precision skincare, particularly for dry or sensitive skin types.

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