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CHLORINE DIOXIDE.

Questionable CAS 10049-04-4 / ANTIMICROBIAL, DEODORANT

Chlorine dioxide is a potent oxidizing agent celebrated for its broad-spectrum antimicrobial properties against bacteria, viruses, and fungi. It also aids wound healing, infection prevention, and exhibits keratolytic and anti-inflammatory effects on the skin.

Antimicrobial Antiseptic Wound Healing Keratolytic Anti-inflammatory Disinfectant

Science

This strong oxidant denatures microbial cell proteins, breaking down cell walls of bacteria, viruses, and fungi with shallow skin penetration. It also promotes tissue repair by stimulating guanylate cyclase, which increases cGMP for cell division and wound healing.


Research

Medium confidence
Effective range 0.00001–0.3%
Optimal

0.3%

Key findings

  1. 01 A 0.3% topical application led to complete resolution of nosocomial skin infections and significantly aided wound healing and tissue repair.
  2. 02 A 0.2% solution (active at 5-20 ppm) achieved over 98.2% reduction in bacterial and fungal activity, with antiviral effects observed at 46-96 ppm.
  3. 03 A 'chlorine dioxide complex cleanser' demonstrated rapid efficacy for keratosis pilaris through its keratolytic and anti-inflammatory properties.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 2.75 – 4.5
0 7 14

Stability

Chlorine dioxide is a reactive gas, typically used as an aqueous solution, highly soluble in cold water. Optimal generation for cosmetic use occurs at pH 2.75-4.5, though it retains properties across pH 2-10.

Conflicts

  • Urea
  • Vitamins A
  • Vitamins C
  • Vitamins D
  • Vitamins E
  • Oil of lavender
  • Metallic compounds
  • Carbohydrates
  • Certain wetting agents
  • Titanium dioxide
  • Soap
  • Glyceryl monostearate

Safety

CIR Status
Not reviewed
Sensitization risk High

The FDA warns against internal use due to severe risks. Topically, while some formulations aim to reduce irritation, caution is advised due to potential for skin irritation, redness, and chemical burns, with its safety not yet formally reviewed by CIR.


Your Skin

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

Our Assessment

Questionable

A powerful antimicrobial and regenerative agent, its significant irritation risk and lack of comprehensive safety review warrant extreme caution for topical skincare application.


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