SD Alcohol 40b

What is SD Alcohol 40b?

SD Alcohol 40B consists of ethanol derived from fermented grains, denatured with tert-butyl alcohol and denatonium benzoate to render it non-potable. Primarily featured in toners, astringents, and cleansers, it serves as a multifunctional volatile alcohol. Upon application, it evaporates swiftly, delivering a cooling sensation while contracting superficial skin proteins for a refined, matte appearance. In formulations, it solubilizes diverse actives, from hydrophilic to lipophilic compounds, promoting even blending and controlled release. Additionally, it modulates product consistency, ensuring smooth flow, stability, and comfortable spread without greasiness. This property suits quick-dry products aimed at oil management, enhancing sensory appeal through lightweight texture and residue-free finish.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Astringent
Creates a temporary tightening and toning effect by contracting surface proteins, helping reduce the look of oiliness and refining feel on skin.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Temporarily tightens skin surface to reduce shine and pore visibility.

Dissolves ingredients for stable, effective formulations.

Adjusts thickness for smooth application and optimal texture.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People with oily skin for mattifying refreshment.
Individuals with dry skin prone to tightness.
Users seeking toning in aftershaves or cleansers.
Those with sensitive skin or irritation history.
Those preferring fast-evaporating, non-greasy products.
People with compromised skin barriers.

Safety Notes

  • EWG rates it moderate hazard mainly for irritation potential.
  • Non-comedogenic, poses low risk of pore clogging.

Frequently Asked Questions about SD Alcohol 40b

What defines SD Alcohol 40B?

Denatured ethanol with specific additives, used for solvency and skin tightening in cosmetics.

Does it clog pores?

Rated 0 comedogenic, unlikely to contribute to breakouts.

Can it irritate skin?

Potential for mild to moderate irritation, especially on sensitive types; test first.