Question 1

What does sh-Polypeptide-121 do in a cosmetic formula?

Accepted Answer

This ingredient functions as a biomimetic conditioning and skin-care active, used to improve the feel, smoothness, and appearance of hair or skin. It is typically included at very low levels as a performance peptide rather than as a bulk structuring ingredient.

Question 2

Is sh-Polypeptide-121 clean?

Accepted Answer

From a clean-beauty perspective, this ingredient is usually viewed as low-irritation, but it can raise transparency questions around biotechnology, purification, and residual processing materials. It is not a common restricted-list ingredient, but acceptance depends on the standard and the supplier documentation.

Question 3

Is sh-Polypeptide-121 sustainable?

Accepted Answer

This material is generally made through biotechnology rather than animal sourcing, which can reduce reliance on animal-derived proteins. As a peptide, it is expected to break down into amino acids, though its overall footprint depends on fermentation inputs, energy use, and purification steps.

Question 4

Is sh-Polypeptide-121 COSMOS-approved?

Accepted Answer

This ingredient is not a straightforward fit for COSMOS-organic or COSMOS-natural because synthetic human-identical peptides and recombinant biotechnology inputs are typically reviewed case by case and may fall outside natural-origin criteria. It has some Green Chemistry positives, including high specificity and likely biodegradability, but engineered production and purification complexity keep it from a green rating.

Question 5

How does sh-Polypeptide-121 work chemically?

Accepted Answer

The molecule is a defined polypeptide made of amino acids, designed to mimic a human protein fragment or sequence for cosmetic conditioning or signaling-style effects. It is used at low concentrations in water-based systems and generally needs preservation, controlled processing temperatures, and supplier guidance for pH and compatibility.