Potassium Hydroxystearate

INCI: POTASSIUM HYDROXYSTEARATE

CAS Number
34326-46-0
Function
Surfactant, cleansing agent
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted in cosmetics; CIR reviewed as part of Fatty Acids & Fatty Acid Salts group โ€” safe as used

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Formulate to be non-irritating; moderate skin irritation noted for related stearic acid formulations at high dermal doses in animal studies.

โš ๏ธ
Concern Level: Low

Frequently Asked Questions

Is Potassium Hydroxystearate safe in cosmetics?

Formulate to be non-irritating; moderate skin irritation noted for related stearic acid formulations at high dermal doses in animal studies. The EU classifies Potassium Hydroxystearate as "permitted". Safety rating: GOOD.

Is Potassium Hydroxystearate allowed in the EU?

Potassium Hydroxystearate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Potassium Hydroxystearate do in cosmetics?

Potassium Hydroxystearate functions as: Surfactant, cleansing agent. It is classified as a cosmetic ingredient in our database. CAS number: 34326-46-0.

What is the Margin of Safety for Potassium Hydroxystearate?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

๐Ÿ“ฑ

Is Potassium Hydroxystearate in Your Products?

Scan any product label with Piro โ€” our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free โ†’

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Potassium Hydroxystearate in your formulation.