Question 1

What does SH-POLYPEPTIDE-12 do in a cosmetic formula?

Accepted Answer

This ingredient functions as a skin-conditioning antioxidant active, used to support formulas aimed at oxidative-stress signaling and visible skin resilience. It is not a structural emulsifier, solvent, or preservative, and is typically present at very low active levels.

Question 2

Is SH-POLYPEPTIDE-12 clean?

Accepted Answer

From a clean-beauty perspective, this material usually raises questions less for irritation and more for biotech origin, trace fermentation impurities, and limited independent topical efficacy data. It is not a common restricted-list ingredient, but it can conflict with strict natural-certification expectations.

Question 3

Is SH-POLYPEPTIDE-12 sustainable?

Accepted Answer

This material is commonly made by fermentation using engineered microorganisms, followed by purification. As a protein-like biomolecule, it is expected to biodegrade rather than persist, but the upstream feedstocks, purification energy, and GMO containment practices matter.

Question 4

Is SH-POLYPEPTIDE-12 COSMOS-approved?

Accepted Answer

This ingredient is generally not permitted under COSMOS-organic or COSMOS-natural when produced through recombinant GMO fermentation, because the standard excludes GMO-derived inputs. Its Green Chemistry profile is mixed: fermentation and low use levels are positives, while genetic-engineering status, purification burden, and supplier-specific feedstock documentation are key caveats.

Question 5

How does SH-POLYPEPTIDE-12 work chemically?

Accepted Answer

The molecule is a small human-identical redox-active protein of roughly 100 amino acids with a dithiol/disulfide active site. It is sensitive to heat, strong oxidizers, proteases, and extreme pH, so it is usually added during cool-down in water-based systems near skin pH and supported with appropriate preservation.