INCI name

O-CYMEN-5-OL

o-Cymen-5-ol (4-isopropyl-m-cresol)

A phenolic antimicrobial and preservative regulated in Annex V.

What it is

o-Cymen-5-ol is a substituted phenol (chemically 4-isopropyl-m-cresol). CosIng lists it as an antimicrobial, deodorant and preservative. In the EU it is listed in Annex V (allowed preservatives).

Where it is used

Found in deodorants, toothpastes, mouthwashes, creams and cleansing products.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

See the EU regulation section for the applicable limits. The label does not show the concentration actually used.

Functions

Antimicrobial
Preventing and/or slowing down microbial growth.
Deodorant
Reducing and/or eluminating unpleasant odour. Contributing against the formation of malodour on body surfaces.
Preservative
Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.

EU regulation

EU · Annex V, entry 384-Isopropyl-m-cresol
Maximum concentration
0.1%
As of
3 November 2026 · (EC) 2009/1223

Products with this ingredient (234)

Check a full ingredient list