Selenium Sulfide ●
TL;DR. This ingredient is a medicated anti-dandruff active used mainly in rinse-off shampoos. It helps control flaking and scalp itching by slowing excess scalp cell turnover and reducing Malassezia-associated activity.
What does Selenium Sulfide do in a cosmetic formula?
This ingredient is a medicated anti-dandruff active used mainly in rinse-off shampoos. It helps control flaking and scalp itching by slowing excess scalp cell turnover and reducing Malassezia-associated activity.
Is Selenium Sulfide clean?
This ingredient has clean-beauty friction because it is a regulated dandruff active with irritation potential, odor, staining, and concentration limits. It is usually treated as a restricted, treatment-oriented material rather than a routine cosmetic cleansing or conditioning ingredient.
Is Selenium Sulfide sustainable?
This material is an inorganic, non-renewable compound made through industrial mineral chemistry, not plant fermentation or low-impact bio-based sourcing. It does not biodegrade in the usual organic-chemistry sense, and down-the-drain release raises aquatic bioaccumulation and wastewater-management concerns.
Is Selenium Sulfide COSMOS-approved?
It is not permitted for COSMOS-organic or COSMOS-natural cosmetics as a conventional anti-dandruff active. From a Green Chemistry view, it scores poorly on renewable sourcing, biodegradability, and end-of-life profile, even though it is effective at low rinse-off use levels.
How does Selenium Sulfide work chemically?
The molecule is best understood as an insoluble inorganic chalcogenide solid rather than a water-soluble small organic, so formulas rely on uniform suspension and controlled rinse-off deposition. Typical anti-dandruff shampoos use about 1% in OTC formats and up to 2.5% in some medicated formats, with stability driven by particle settling, surfactant compatibility, packaging, and dispersion quality more than pH solubility.
Last updated 2026-05-13