Cystine Bis-PG-Propyl Silanetriol

INCI: CYSTINE BIS-PG-PROPYL SILANETRIOL

CAS Number
Not publicly listed in standard databases (proprietary copolymer)
Function
Hair Conditioning, Skin Conditioning
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Allowed. Not prohibited or restricted; silicone-based conditioning agents are widely accepted in US cosmetics

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Copolymer of two well-established ingredients (cystine + silanetriol); expected to have low acute oral toxicity and be essentially non-irritating to skin and eyes. Uniquely combines the amino acid cysteine (a building block of hair keratin's disulfide bonds) with silicone technology. Undergoes disulfide exchange reactions with reduced-state hair (e.g., during perm treatments), enabling semi-permanent conditioning. Proven to increase the cuticle de-cementing strain threshold, protecting agains...

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Concern Level: High

Frequently Asked Questions

Is Cystine Bis-PG-Propyl Silanetriol safe in cosmetics?

Copolymer of two well-established ingredients (cystine + silanetriol); expected to have low acute oral toxicity and be essentially non-irritating to skin and eyes. Uniquely combines the amino acid cysteine (a building block of hair keratin's disulfide bonds) with silicone technology. Undergoes disulfide exchange reactions with reduced-state hair (e.g., during perm treatments), enabling semi-permanent conditioning. Proven to increase the cuticle de-cementing strain threshold, protecting agains... The EU classifies Cystine Bis-PG-Propyl Silanetriol as "permitted". Safety rating: MODERATE.

Is Cystine Bis-PG-Propyl Silanetriol allowed in the EU?

Cystine Bis-PG-Propyl Silanetriol EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Cystine Bis-PG-Propyl Silanetriol do in cosmetics?

Cystine Bis-PG-Propyl Silanetriol functions as: Hair Conditioning, Skin Conditioning. It is classified as a cosmetic ingredient in our database. CAS number: Not publicly listed in standard databases (proprietary copolymer).

What is the Margin of Safety for Cystine Bis-PG-Propyl Silanetriol?

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.

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