Ingredient · Organic UV Filter
Octocrylene (Organic UV Filter)
INCI · Octocrylene
Octocrylene (INCI: Octocrylene) is an organic filter working in UVB and short UVA, but its main sunscreen value often lies in its photostabiliser role. It slows degradation throughout the day of filters such as avobenzone that are light-sensitive on their own, making it a quiet foundation of many avobenzone formulas. Its oil solubility also lets it act as a carrier that dissolves other organic filters. It appears on labels as 'Octocrylene'. One discussion concerns its potential to contain or form trace benzophenone over time under storage or light conditions. This is addressed in the literature and regulatory and environmental assessment processes; Klaris considers it in the context of ongoing evaluation, not as 'proven harm'. Octocrylene is also among the organic filters relatively more often associated with contact sensitivity, though this does not apply to everyone. Proper assessment considers its protective or stabilising role, its pairing with avobenzone and sensitivity context as a whole.
i. Cosmetic Functions
Frequently Discussed Effects
The following headings summarise areas of effect frequently discussed in the literature; visible results in each area require regular use and a suitable formula.
UVB + Short-UVA Absorption
An organic filter that absorbs and neutralises light in the UVB and UVA-2 ranges.
Photostabiliser
Often added to improve the stability of filters such as avobenzone that are not photostable on their own.
Oil-Phase Solubility
Its oil-soluble structure helps distribute other organic filters in a formula.
Mechanism
What Happens Within the Skin?
The following points summarise mechanisms from dermocosmetic literature in plain English. Klaris presents them as background information to help readers understand the context, not as medical claims.
Step 1
UVB + Short-UVA Absorption
Absorbs light in UVB and UVA-2; broad-spectrum protection requires a UVA filter to complement long-UVA coverage.
Step 2
Photostabiliser
Slows degradation of light-sensitive filters such as avobenzone through triplet energy transfer; this is the main reason it is added to many formulas.
Step 3
Oil-Soluble Solvent
Dissolves other solid organic filters in the oil phase, supporting distribution and film quality.
Step 4
Benzophenone Formation Context
Its potential to contain or form trace benzophenone under storage and light conditions is addressed in the literature and regulatory and environmental evaluations; it is assessed as ongoing evaluation, not 'proven harm'.
Step 5
Contact Sensitivity Tendency
Among the organic filters relatively more often associated with contact sensitivity. Individual responses vary; patch testing is a contextual approach.
ii. Role in the Formula
How Is It Read on a Label?
Octocrylene is among the UV filters regulated by cosmetic legislation and is very common in sunscreens for both protection and photostabilisation. It is generally paired with avobenzone. Conditions of use are assessed within formula and market regulations, with proportions varying according to formula context.
A Closer Look · pH, Stability, Synergy
Octocrylene's most critical formulation role is photostabilisation. UVA filters such as avobenzone degrade in light on their own; octocrylene slows this through triplet energy transfer and helps maintain protection throughout the day. Calling it 'just a filler' therefore misses its function. Its oil-soluble structure also gives it a solvent role for other solid filters. It is generally used at levels up to 10%, depending on the formula. The most discussed issue is its potential to contain or form trace benzophenone, depending on purity and conditions throughout shelf life. The literature and regulatory and environmental assessment processes address this. Klaris considers it ongoing evaluation without turning it into alarm or inferring 'proven harm'. A second consideration is contact sensitivity: octocrylene is among the organic filters relatively more often associated with it, making patch testing particularly meaningful for sensitive profiles. Octocrylene covers UVB and short UVA; for a broad spectrum it is assessed alongside UVA filters such as avobenzone, Tinosorb or Uvinul A Plus. Klaris considers its stabiliser role, filter combination, purity and formula context, and sensitivity profile as a whole.
Typical Concentration Range
2% - 10% (within conditions set by regulations)
Ingredient Family
UV Filters
iii. Sensitivity Advisory
A Note on Extra Care in Context
Individual sensitivity to organic filters may be reported in sensitive profiles. Octocrylene is among the filters associated with contact sensitivity in some users; patch testing a new sunscreen is a measured approach.
A sensitivity advisory is not an instruction for use; where individual health circumstances, pregnancy or known sensitivities are involved, discussing the decision with your doctor may be a more contextual approach.
Common Misconceptions
Frequently Confused Points
Common Belief
Octocrylene is just a filler or solvent.
A More Contextual Reading
Its main value is photostabilisation, helping maintain protection throughout the day in avobenzone formulas. Calling it a filler overlooks this function.
Common Belief
Octocrylene is harmful because it turns into benzophenone.
A More Contextual Reading
Its potential to contain or form trace benzophenone is addressed in the literature and regulatory assessments; this does not mean 'proven harm'. It is considered within ongoing evaluation of purity and shelf-life conditions.
Common Belief
As a chemical filter, it causes contact sensitivity in everyone.
A More Contextual Reading
Octocrylene is relatively often associated with contact sensitivity, but this does not apply to everyone. Individual response and patch testing matter.
Common Belief
Octocrylene provides a broad spectrum on its own.
A More Contextual Reading
It works in UVB and short UVA. Long UVA requires a complementary UVA filter such as avobenzone, Tinosorb or Uvinul A Plus.
Scientific Basis
Sources and Their Scope
The following headings indicate areas of research; they are not citations of a specific publication or confirmation that every statement on this page has been verified. The links provided should be read with their individual scope in mind.
- International INCI / CosIng database
- Regulatory authority documents (EU SCCS, TİTCK)
- Dermocosmetic research publications
TİTCK, SCCS and similar regulatory authorities are mentioned in the context of publicly available regulation; Klaris has no official endorsement, partnership or collaboration with these institutions.
Source Links
- Database RecordPubChem · Octocrylene Ingredient Record (CID 22571)
Database records provide ingredient identity and registration information; on their own, they do not establish the effect of a finished product or its suitability for a profile. Search links are not specific research papers.
iv. Related Ingredients
Ingredients Often Read Together
v. UV Filters Family
Other Ingredients in the Same Family
Explore ingredients in the same functional family to deepen your reading of formulas.
vi. Academy · Related Reading
For a Closer Look
Klaris · Example Analyses
How Does Octocrylene (Organic UV Filter) Feature
in Your Products?
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