Question 1

What does Potassium Sorbate. May Contain: CI 77891 do in a cosmetic formula?

Accepted Answer

This ingredient is a preservative used mainly to control yeast and mold growth in water-containing formulas. It is most useful in mildly acidic products such as lotions, gels, shampoos, and leave-on skin care.

Question 2

Is Potassium Sorbate. May Contain: CI 77891 clean?

Accepted Answer

From a clean-beauty perspective, it is a widely accepted preservation option with a long safety record at cosmetic use levels. Sensitivity is uncommon, though stinging or irritation can occur in formulas with low pH or on compromised skin.

Question 3

Is Potassium Sorbate. May Contain: CI 77891 sustainable?

Accepted Answer

This material is typically produced through industrial synthesis rather than direct plant extraction. It is water-soluble, does not bioaccumulate meaningfully, and is considered readily biodegradable under typical environmental conditions.

Question 4

Is Potassium Sorbate. May Contain: CI 77891 COSMOS-approved?

Accepted Answer

It is permitted under COSMOS natural and organic standards as an allowed preservative, with use governed by formula type and regulatory limits. Its profile fits Green Chemistry reasonably well because it is effective at low levels, biodegradable, and does not require persistent solvents in use.

Question 5

How does Potassium Sorbate. May Contain: CI 77891 work chemically?

Accepted Answer

The molecule is a potassium salt of an unsaturated six-carbon carboxylate, and its preservation activity depends on conversion to the protonated acid form in acidic water systems. Typical cosmetic use is about 0.1% to 0.3%, with best performance below roughly pH 6.5 and common pairing with chelators or broader-spectrum preservatives.