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SD ALCOHOL 23-F.

Optional / ASTRINGENT, SOLVENT, VISCOSITY CONTROLLING

SD Alcohol 23-F is a specially denatured form of ethanol, designed for cosmetic applications to prevent consumption. It serves primarily as a versatile solvent and penetration enhancer, contributing to lightweight and fast-absorbing product textures. This specific variant is denatured with salicylic acid, resorcinol, and either bergamot or bay oil.

solvent penetration enhancer astringent antimicrobial preservative

Science

On the skin, SD Alcohol 23-F functions to effectively dissolve other components within a formulation, thereby creating an elegant and swift-drying finish. It also acts as a penetration enhancer, facilitating the deeper absorption of active ingredients. Beyond these roles, it offers astringent properties that provide a refreshing sensation and a temporary skin-tightening effect. Its antimicrobial qualities aid in skin disinfection, and it can also serve as a preservative, though it is notably associated with a drying effect on the skin.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Ethanol, the principal component of SD Alcohol 23-F, is a volatile compound, requiring formulation strategies to control evaporation and maintain product stability. It is also flammable.


Safety

CIR Status
Safe as used
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed the safety of denatured alcohols, including specially denatured (SD) alcohols, when utilized in cosmetic formulations. The safety assessment considers the denaturing agents, which are present at low concentrations. SD Alcohol 23-F is specifically denatured with salicylic acid, resorcinol, and bergamot or bay oil, all of which have undergone independent safety evaluations by the CIR Expert Panel. The FDA regulates SD alcohol denaturing processes under 27CFR21. While the SCCS has not issued an opinion on ethanol, high margins of safety are anticipated.


Your Skin

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

Our Assessment

Optional

While SD Alcohol 23-F offers valuable formulation benefits such as enhanced penetration and a light texture, its potential for dryness and moderate irritancy necessitates careful consideration for precision skincare applications.


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