Dimethiconol Cysteine

INCI: DIMETHICONOL CYSTEINE

CAS Number
| 10
Function
Hair-conditioning agent
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” reported in VCRP (6 formulations, 0.07% in conditioners); no CFR restriction

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Low use concentration (0.07%). Cysteine thiol group could theoretically react under extreme pH but irrelevant at cosmetic use levels. CIR 2017 concluded safe in the present practices of use and concentration.

โš ๏ธ
Concern Level: Low

Frequently Asked Questions

Is Dimethiconol Cysteine safe in cosmetics?

Low use concentration (0.07%). Cysteine thiol group could theoretically react under extreme pH but irrelevant at cosmetic use levels. CIR 2017 concluded safe in the present practices of use and concentration. The EU classifies Dimethiconol Cysteine as "permitted". Safety rating: GOOD.

Is Dimethiconol Cysteine allowed in the EU?

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

What does Dimethiconol Cysteine do in cosmetics?

Dimethiconol Cysteine functions as: Hair-conditioning agent. It is classified as a cosmetic ingredient in our database. CAS number: | 10.

What is the Margin of Safety for Dimethiconol Cysteine?

not established 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 Dimethiconol Cysteine 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 Dimethiconol Cysteine in your formulation.