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DICHLORO-M-XYLENOL.

Questionable CAS 133-53-9 / 30581-95-4 / ANTIMICROBIAL, DEODORANT

Dichloroxylenol is a broad-spectrum antimicrobial agent, effective as an antiseptic and disinfectant in various products. It inhibits microbial growth, particularly Gram-positive bacteria, and is commonly found in personal care formulations up to 0.5%.

Antimicrobial Antiseptic Disinfectant

Science

This phenolic compound disrupts microbial cell walls and inactivates cellular enzymes. Its hydroxyl groups bind to bacterial cell membrane proteins, leading to membrane disruption, leakage of cellular contents, and disabled cell function.


Research

Medium confidence
Effective range 0.5–3.75%
Optimal

0.5%

Key findings

  1. 01 Effective at 0.5% in a cream with salicylic acid for acne vulgaris treatment.
  2. 02 Safe for topical antifungal use in concentrations ranging from 0.5% to 3.75%.

Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH 4 – 9
0 7 14

Stability

Dichloroxylenol exhibits high bactericidal activity and stability, remaining hydrolytically stable with a half-life exceeding one year across a pH range of 4 to 9.

Conflicts

  • Binds or complexes with cosmetic materials including PVP, polyethylene glycol, polysorbate, and methylcellulose.

Safety

CIR Status
Safe as used
Max tested
0.5%
Sensitization risk Moderate

While the CIR Expert Panel deemed it safe up to 0.5%, new studies indicate a positive mutagenicity assay and mouse local lymph node assay, with the EU classifying it as a skin sensitizer.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy Medium
Comedogenicity Unknown

Our Assessment

Questionable

Dichloroxylenol offers antimicrobial benefits relevant for certain skin concerns, but its potential for sensitization and mutagenicity, alongside its classification as a skin sensitizer by the EU, makes its use in precision skincare questionable.


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