Ingredient · Broad-Spectrum Hybrid Filter
Tinosorb M (Hybrid Filter)
INCI · Methylene Bis-Benzotriazolyl Tetramethylbutylphenol
Related names and forms: Bisoctrizole. This list does not indicate synonyms or exact ingredient matches.
Tinosorb M (INCI: Methylene Bis-Benzotriazolyl Tetramethylbutylphenol; trade name Bisoctrizole) is a hybrid filter that genuinely blurs the organic-versus-mineral distinction. It is an organic molecule, but appears as micronised particles in a formula, so it both absorbs light and scatters some through its particle structure. This is real particle behaviour, distinct from the 'only reflects' simplification applied to minerals. It provides broad-spectrum UVB and UVA protection, is photostable and is generally supplied as a water-based dispersion. Micronised particles may cause slight whiteness in some formulas, which well-designed formulas balance through texture and other ingredients. Labels show 'Methylene Bis-Benzotriazolyl Tetramethylbutylphenol'. For Klaris, proper assessment considers its hybrid mechanism, broad-spectrum contribution and texture together. It is a useful example of why 'organic versus mineral' alone is an insufficient assessment framework.
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.
Broad-Spectrum Protection
A photostable broad-spectrum filter working in UVB and UVA.
Hybrid Mechanism
Combines absorption and particle-based scattering, blurring the organic-versus-mineral distinction.
Formula Stability
Its light-resistant structure helps create stable formulas alongside other filters.
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
Hybrid Mechanism: Absorption + Scattering
Although an organic molecule, it both absorbs and scatters because it is present as micronised particles. This is real particle behaviour, distinct from the 'reflection only' simplification applied to minerals.
Step 2
Broad-Spectrum Protection
A photostable broad-spectrum filter working in UVB and UVA.
Step 3
High Photostability
Its light-resistant structure contributes to a stable system alongside other filters.
Step 4
Micronised Particles
Particle size may produce slight whiteness in some formulas; its large structure is associated with a tendency to remain at the surface.
Step 5
Water-Based Dispersion
Generally supplied as a dispersion in the water phase, suitable for creating two-phase systems alongside oil-soluble filters.
ii. Role in the Formula
How Is It Read on a Label?
Tinosorb M is a broad-spectrum filter regulated by cosmetic legislation, supplied as a water-based dispersion. Its micronised particles may cause slight whiteness in some formulas; well-designed formulas balance this through texture. Conditions of use are assessed within formula and market regulations.
A Closer Look · pH, Stability, Synergy
Tinosorb M is an interesting cosmetic chemistry example: although an organic molecule, its micronised particle form gives both absorption and scattering. This hybrid behaviour illustrates why the common 'organic filters absorb, mineral filters reflect' distinction is incomplete. Broad-spectrum UVB and UVA coverage and high photostability make it valuable in modern formulas. Generally supplied as a water-based dispersion, it allows two-phase water-and-oil protection systems alongside oil-soluble filters. Micronised particles may cause slight whiteness, more noticeable on darker skin tones and managed through texture and optical balance. Its large particle and molecular structure is associated with a tendency to remain at the surface. Although Tinosorb M can provide a broad spectrum alone, it is often combined with other filters to reach the intended protection level and texture. Regional regulations may differ, so Klaris describes conditions in general terms without unsourced specific limits. Newer-generation filters are discussed in a low-irritation context for sensitive profiles; patch testing a new product is measured. Klaris assesses the hybrid mechanism, broad-spectrum contribution, whiteness-texture balance and filter combination as a whole.
Typical Concentration Range
1% - 10% (within conditions set by regulations)
Ingredient Family
UV Filters
iii. Sensitivity Advisory
A Note on Extra Care in Context
A newer-generation filter generally described as low-irritation. Considering texture and appearance preferences alongside your profile may help with formulas containing micronised particles.
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
Tinosorb M is a mineral filter.
A More Contextual Reading
Tinosorb M is an organic molecule, but absorbs and scatters because it is used as micronised particles. It is a hybrid ingredient, not a purely mineral filter.
Common Belief
Being hybrid means carrying the disadvantages of both mineral and chemical filters.
A More Contextual Reading
On the contrary, combining absorption and particle-based scattering provides broad-spectrum coverage and high photostability. Hybrid structure offers formulation flexibility, not a disadvantage.
Common Belief
Micronised particles penetrate skin and enter the body.
A More Contextual Reading
The large particle and molecular structure is associated with a tendency to remain at the surface. Micronised forms are used under defined regulatory conditions. This calls for contextual assessment, not alarm.
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 · Bisoctrizole / Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (CID 3571576)
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
Ingredient · Broad-Spectrum Organic Filter
Tinosorb S (Broad-Spectrum Filter)
INCI · Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Ingredient · Mineral (Physical) UV Filter
Zinc Oxide (Mineral UV Filter)
INCI · Zinc Oxide
Ingredient · Mineral (Physical) UV Filter
Titanium Dioxide (Mineral UV Filter)
INCI · Titanium Dioxide
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 Tinosorb M (Hybrid Filter) Feature
in Your Products?
Explore product examples to see the ingredient list, general assessment and match score that changes with the example profile together.
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