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BENZYL SALICYLATE.

Avoid CAS 118-58-1 / PERFUMING, UV ABSORBER

A naturally occurring aromatic ester that serves a dual purpose as a delicate floral fragrance fixative and a protective UV absorber. It is primarily utilized in precision chemistry to stabilize light-sensitive formulations and extend the longevity of scent profiles.

Perfuming UV Absorbing Fragrance Fixative Light Stabilizer

Science

Beyond its olfactory properties, it functions as a light stabilizer by absorbing ultraviolet radiation, thereby preventing the photodegradation of other active ingredients. On a molecular level, it can act as a penetration enhancer for lipophilic compounds and has shown potential in vitro anti-inflammatory activity by suppressing nitric oxide production and modulating iNOS and COX-2 pathways.


Research

High confidence
Effective range 0.01–0.5%
Optimal

0.15%

Key findings

  1. 01 Standard maximum concentration for leave-on light stabilization, demonstrating negligible systemic absorption at 0.031%.
  2. 02 Observed a 2.5% sensitivity rate in patch testing, identifying it as a documented contact allergen at higher concentrations.

Transparency

Not commonly dusted
Min. effective
0.05%
Red flag below
1%

As a fragrance and stabilizer, it is effective at very low concentrations (typically below 0.15%); higher concentrations are rarely necessary and increase the risk of skin sensitization.


The Formula

Solubility
Oil
Optimal pH 4 – 7.5
0 7 14

Stability

Prone to hydrolysis of its ester linkage if exposed to extreme pH environments (highly acidic or alkaline). Best stored in airtight, light-shielded containers.

Synergies

  • Lipophilic actives
  • UV filters
  • Essential oil components

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Strong bases

Safety

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

While safe in cosmetic applications, it is a known allergen that must be disclosed on ingredient lists in many regions. IFRA limits apply, particularly for lip products (0.5%).


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Moderate
Comedogenicity Low

Our Assessment

Avoid

While effective as a light stabilizer, its status as a frequent contact allergen makes it unsuitable for precision skincare targeting sensitive or reactive skin types.


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