Question 1

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

Accepted Answer

This ingredient is a broad-spectrum preservative used to control microbial growth in water-containing formulas. It is strongest against bacteria and is often paired with other preservation boosters for fuller yeast and mold coverage.

Question 2

Is Phenoxyethanol. May Contain: CI 77891 clean?

Accepted Answer

From a clean-beauty perspective, this ingredient is accepted by many conventional and retailer standards but often flagged because it is synthetic and can irritate sensitive skin or eyes at higher use levels. It is not a formaldehyde donor and is regulated with a common maximum use level of 1% in finished cosmetics in several major markets.

Question 3

Is Phenoxyethanol. May Contain: CI 77891 sustainable?

Accepted Answer

This material is typically made from petrochemical feedstocks rather than renewable plant inputs. It is considered readily biodegradable and is not expected to build up significantly in aquatic organisms, though it is still a synthetic preservative with fossil-sourced supply-chain baggage.

Question 4

Is Phenoxyethanol. May Contain: CI 77891 COSMOS-approved?

Accepted Answer

It is not permitted in COSMOS organic or COSMOS natural certified formulas. Its Green Chemistry profile is mixed, with low effective use levels and biodegradability on the positive side, but petrochemical sourcing and synthetic processing on the weaker side.

Question 5

How does Phenoxyethanol. May Contain: CI 77891 work chemically?

Accepted Answer

This compound is an aromatic ether-alcohol, combining a phenyl ring, an ether linkage, and a terminal alcohol group, which gives it both water-phase compatibility and antimicrobial activity. Typical use is about 0.3% to 1.0%, with broad pH stability, good heat stability, and frequent pairing with chelators, glycols, or organic-acid preservatives to broaden system coverage.