SD Alcohol 40 ●
TL;DR. This ingredient is a fast-evaporating solvent used to dissolve fragrance materials, actives, and film-formers, while giving toners, sprays, sunscreens, and hair products a quick-dry feel. It can also reduce tack and improve penetration of some formula components.
What does SD Alcohol 40 do in a cosmetic formula?
This ingredient is a fast-evaporating solvent used to dissolve fragrance materials, actives, and film-formers, while giving toners, sprays, sunscreens, and hair products a quick-dry feel. It can also reduce tack and improve penetration of some formula components.
Is SD Alcohol 40 clean?
From a clean-beauty perspective, this ingredient is acceptable in many frameworks but has friction because it can feel drying or increase stinging on compromised skin, especially at higher levels. Standing also depends on the denaturing agents used, since some programs scrutinize those additives separately.
Is SD Alcohol 40 sustainable?
This material can be made from fermented plant sugars or from petrochemical feedstocks, so sourcing matters. It is readily biodegradable, but it is volatile and can contribute to product-level VOC emissions.
Is SD Alcohol 40 COSMOS-approved?
It can align with COSMOS when the base material is from an approved renewable source and the denaturing system is permitted under the standard. It fits several Green Chemistry principles when fermentation-derived and minimally processed, but noncompliant denaturants or petrochemical sourcing weaken that alignment.
How does SD Alcohol 40 work chemically?
The molecule is a small, polar, highly volatile solvent with both water-miscible and oil-solubilizing behavior, which explains its role in quick-drying and clarity-dependent formulas. Typical use can range from low single digits in toners to much higher levels in fine fragrance and hair sprays, and it is generally stable across normal cosmetic pH ranges but can increase skin sensory intensity as concentration rises.
Last updated 2026-08-17