Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

SD ALCOHOL 1.

Questionable CAS 8048-19-9 / ASTRINGENT, SOLVENT, VISCOSITY CONTROLLING

SD Alcohol 1 is a denatured alcohol primarily utilized for its solvent, astringent, and quick-drying properties in cosmetic formulations. While effective for enhancing ingredient penetration and controlling product viscosity, its use requires careful consideration due to potential for dryness and irritation in higher concentrations. Regulatory bodies deem it safe for cosmetic use under specific concentration limits.

Summary

Solvent Astringent Viscosity Controlling Antiseptic Antimicrobial Penetration Enhancer Quick-Drying Agent Degreasing Agent

Science

Mechanism of Action

SD Alcohol 1 primarily functions as a potent solvent, facilitating the dissolution of other ingredients and oil-based components, thereby supporting stable product formulations. It also acts as an astringent, contributing to a temporary pore-tightening effect, and exhibits antiseptic properties that can inhibit microbial growth, thus extending product shelf life. Its quick-drying and degreasing characteristics impart a weightless feel to products and can enhance the absorption of other active ingredients into the skin. However, in elevated concentrations, this ingredient can disrupt the skin's natural lipid barrier, leading to dryness, irritation, and potential free radical damage.

Research

Clinical Evidence

High confidence
Effective range N/A
Optimal

12%

Transparency

Dusting Analysis

Not commonly dusted
Red flag below
12%

SD Alcohol 1 is primarily used for its functional properties as a solvent, astringent, and quick-drying agent at effective concentrations, rather than being 'dusted' for marketing claims. However, exceeding the recommended maximum concentration of 12% (as per CIR guidelines) presents a significant red flag due to increased risk of skin barrier disruption, dryness, and irritation.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Ethanol, the primary component of SD Alcohol 1, effectively dissolves a broad spectrum of polar substances. pH is generally not considered a primary determinant of its stability, nor is it typically a monitored parameter for this ingredient.

Synergies

  • Enhances penetration of other active ingredients

Conflicts

  • Strong oxidizing agents
  • Acids
  • Alkali metals
  • Ammonia
  • Hydrazine
  • Peroxides
  • Sodium
  • Acid anhydrides
  • Calcium hypochlorite
  • Chromyl chloride
  • Nitrosyl perchlorate
  • Bromine pentafluoride
  • Perchloric acid
  • Silver nitrate
  • Mercuric nitrate
  • Potassium-tert-butoxide
  • Magnesium perchlorate
  • Acid chlorides
  • Platinum
  • Uranium hexafluoride
  • Silver oxide
  • Iodine heptafluoride
  • Acetyl bromide
  • Disulfuryl difluoride
  • Tetrachlorosilane + water
  • Acetyl chloride
  • Permanganic acid
  • Ruthenium (VIII) oxide
  • Uranyl perchlorate
  • Potassium dioxide

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
12%
Sensitization risk Low

The CIR Expert Panel concluded that denatured alcohols, including specific types like SD Alcohol 40-B and SD Alcohol 40-C (which are similar in principle to SD Alcohol 1), are safe for use in cosmetic formulations at concentrations up to 12%. This safety is contingent on the specific denaturants employed. The FDA acknowledges denatured alcohol as safe in various over-the-counter products, including sunscreens.

Your Skin

Skin Compatibility

No Normal
No Dry
Yes Oily
No Sensitive
Irritancy High
Comedogenicity Medium

Our Assessment

Verdict

Questionable

While functionally valuable as a solvent and quick-drying agent, SD Alcohol 1 carries a notable risk for irritation and dryness, requiring precise formulation and concentration control to mitigate potential skin barrier disruption.

Related

Similar Ingredients

Finding similar ingredients…