Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle

Benzotriazole.

Valuable CAS 95-14-7 / ANTIMICROBIAL

A high-performance stabilizer and broadband UV absorber designed to protect both the skin and delicate formula ingredients from light-induced degradation. By converting radiation into harmless heat, it ensures that active ingredients remain potent even in transparent packaging.

UV absorber Product stabilizer Antimicrobial Anti-corrosive

Science

Benzotriazole functions through a rapid keto-enol tautomerization process, capturing UVA and UVB radiation and dissipating it as thermal energy. Beyond UV filtration, it forms a microscopic chemisorbed film that provides anti-corrosive and antimicrobial benefits while chelating metal ions to prevent formula oxidation.


Research

High confidence
Effective range 0.03–1%
Optimal

1%

Key findings

  1. 01 Clinical evaluation of 436 subjects confirmed the absence of irritation, sensitization, and phototoxicity within standard cosmetic concentrations.
  2. 02 A long-term 3-year trial utilizing 5.0% concentrations demonstrated exceptional tolerance, with hypersensitivity occurring in less than 0.5% of applications.
  3. 03 Regulatory risk assessments (MFDS) establish a 1.0% limit to maintain a safety margin exceeding 100.

Transparency

Not commonly dusted
Min. effective
0.01%
Red flag below
0.005%

Because it is primarily used as a photostabilizer for the formula rather than a primary active for the skin, it is effective at very low concentrations (0.01%–0.1%). It is rarely 'dusted' because its presence is functional for product integrity rather than marketing claims.


The Formula

Solubility
Both
Optimal pH 5 – 9
0 7 14

Stability

Exhibits robust stability against acids, alkalies, and oxidation; remains hydrolytically stable at temperatures up to 50°C.

Synergies

  • Vitamin C (L-Ascorbic Acid)
  • Retinoids
  • Broad-spectrum Sunscreen Actives

Conflicts

  • Strong oxidizing agents
  • Trace metals (may form metallic salts)

Safety

CIR Status
Safe as used
Max tested
1%
Pregnancy
Safe
Sensitization risk Low

While pure benzotriazole is an eye irritant, it is clinically non-sensitizing at the concentrations utilized in precision skincare.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

An essential photostabilizer that ensures the longevity and potency of sensitive actives by neutralizing UV-induced degradation.


Related

Finding similar ingredients…


References