Question 1

What does Potassium Sorbate. May Contain: CI 77499 do in a cosmetic formula?

Accepted Answer

This ingredient is a preservative used mainly to control yeast and mold in water-based beauty and personal care formulas. It is often paired with other preservation tools to broaden microbial coverage.

Question 2

Is Potassium Sorbate. May Contain: CI 77499 clean?

Accepted Answer

From a clean-beauty perspective, it is widely accepted and not a common restricted-list concern. It is generally well tolerated, though like many preservatives it can cause stinging or irritation in sensitive skin, especially at higher use levels or in leave-on acidic formulas.

Question 3

Is Potassium Sorbate. May Contain: CI 77499 sustainable?

Accepted Answer

This material is readily biodegradable and does not raise major persistence or bioaccumulation concerns. It is commonly made through synthetic processing rather than direct agricultural sourcing, so its sustainability profile is more about efficient manufacture and low environmental persistence than renewable origin.

Question 4

Is Potassium Sorbate. May Contain: CI 77499 COSMOS-approved?

Accepted Answer

It is permitted under COSMOS-natural and COSMOS-organic standards as an allowed preservative when used within regulatory limits. Its Green Chemistry fit is solid on biodegradability and low use concentration, with a less ideal score on renewable feedstock because commercial supply is typically synthetic.

Question 5

How does Potassium Sorbate. May Contain: CI 77499 work chemically?

Accepted Answer

The molecule is an ionic salt of an unsaturated weak acid, and its antimicrobial activity depends on the acid form being available in the formula. It is most effective in acidic systems, commonly below about pH 6, and typical cosmetic use levels are around 0.1% to 0.3%, often with chelators or companion preservatives for broader protection.