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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Other
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is a broad-spectrum organic UV filter belonging to the hydroxyphenyltriazine class, used in topical formulations to provide high-level photostable protection against both UVA and UVB radiation.
Name
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine
Raw Name
BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENYL TRIAZINE
Category
Other
Drug Count
3
Variant Count
3
Last Verified
February 17, 2026
About Bis-ethylhexyloxyphenol Methoxyphenyl Triazine
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is a broad-spectrum organic UV filter belonging to the hydroxyphenyltriazine class, used in topical formulations to provide high-level photostable protection against both UVA and UVB radiation.
Detailed information about Bis-ethylhexyloxyphenol Methoxyphenyl Triazine
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Bis-ethylhexyloxyphenol Methoxyphenyl Triazine.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine (commonly known by its trade name Tinosorb S or the INCI name Bemotrizinol) is a high-performance, oil-soluble organic compound specifically engineered to provide broad-spectrum protection against ultraviolet (UV) radiation. It belongs to the chemical class of hydroxyphenyltriazines, which are characterized by their exceptional photostability and ability to absorb energy across a wide range of wavelengths. Unlike older generations of UV filters that may degrade rapidly upon exposure to sunlight, Bis-ethylhexyloxyphenol Methoxyphenyl Triazine remains structurally intact, maintaining its protective efficacy throughout the duration of sun exposure.
In the context of pharmacological classification, this agent is categorized as a topical photoprotective agent (sunscreen). It is designed to be incorporated into dermatological preparations such as creams, lotions, and gels to prevent the deleterious effects of solar radiation on human skin. While it is widely approved and considered a 'gold standard' filter in the European Union (EU), Australia (TGA), and various Asian markets, its regulatory status in the United States has been subject to the FDA's Sunscreen Innovation Act (SIA) and the ongoing Generally Recognized as Safe and Effective (GRASE) review process. As of 2026, it is recognized globally by dermatologists as one of the most effective and safest filters available for preventing photoaging (premature aging caused by the sun) and reducing the risk of skin malignancies, including basal cell carcinoma and melanoma.
The primary mechanism of action for Bis-ethylhexyloxyphenol Methoxyphenyl Triazine involves the absorption of UV photons. At the molecular level, the triazine ring and the associated phenolic groups create a conjugated system that allows the molecule to capture energy from UV radiation in both the UVB (280–320 nm) and UVA (320–400 nm) ranges. When a UV photon strikes the molecule, the electrons are promoted to an excited state. Rather than breaking chemical bonds (which would cause the molecule to degrade), Bis-ethylhexyloxyphenol Methoxyphenyl Triazine undergoes a process called internal conversion. In this process, the absorbed energy is dissipated harmlessly as low-level heat, and the molecule returns to its ground state, ready to absorb another photon. This cycle repeats indefinitely, which is why the substance is termed 'photostable.'
Furthermore, this ingredient acts as a 'photostabilizer' for other less stable UV filters. For example, when formulated alongside Avobenzone (a common UVA filter that is notoriously unstable), Bis-ethylhexyloxyphenol Methoxyphenyl Triazine can prevent Avobenzone from breaking down, thereby extending the duration of broad-spectrum protection for the patient. This synergistic effect is a cornerstone of modern, high-SPF (Sun Protection Factor) dermatological science.
One of the most significant safety features of Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is its minimal systemic absorption. Due to its relatively high molecular weight (approximately 627.8 g/mol to 812 g/mol depending on specific derivative complexes), the molecule is too large to penetrate the stratum corneum (the outermost layer of the skin) effectively. Clinical studies using human skin models have shown that the vast majority of the applied dose remains in the upper layers of the epidermis, with negligible amounts reaching the systemic circulation. This reduces the risk of internal organ exposure and endocrine disruption, a common concern with smaller UV filters like Oxybenzone.
Since systemic absorption is negligible, the 'distribution' of this agent is limited to the surface of the skin and the hair follicles. It does not exhibit significant protein binding in the blood because it does not reach the bloodstream in therapeutic or toxicological quantities. It does not cross the blood-brain barrier.
Because the substance is not absorbed systemically, it does not undergo hepatic metabolism via the Cytochrome P450 (CYP) enzyme system. There are no known active metabolites produced within the human body following topical application.
Elimination occurs primarily through mechanical means. The ingredient is removed from the skin surface through washing, friction (contact with clothing), and the natural desquamation (shedding) of skin cells. If any trace amounts were to be absorbed, they would likely be excreted via the biliary or renal pathways, though this is not a significant clinical consideration for topical use.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is indicated for the following uses:
This active ingredient is never used in its pure powder form by patients. Instead, it is found in:
> Important: Only your healthcare provider or a board-certified dermatologist can determine if a specific formulation containing Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is right for your specific skin type and medical condition.
For the prevention of UV-induced skin damage, Bis-ethylhexyloxyphenol Methoxyphenyl Triazine must be applied in sufficient quantities to achieve the labeled SPF and UVA protection factors. Clinical guidelines from the American Academy of Dermatology (AAD) and the European Academy of Dermatology and Venereology (EADV) suggest the following:
Because Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is not systemically absorbed, no dosage adjustments are required for patients with chronic kidney disease or renal failure.
There is no evidence that topical application of this filter affects or is affected by liver function. No dosage adjustments are necessary for patients with hepatic impairment.
Elderly patients often have thinner, more fragile skin (atrophic skin). While the dosage remains the same, care should be taken during application to avoid mechanical injury to the skin. Formulations with added emollients may be preferred to address age-related dryness.
If you forget to apply the product before going outdoors, apply it as soon as you remember. However, be aware that skin damage may have already occurred. If you are already sunburnt, do not apply the product to the burnt area to 'fix' the damage; instead, seek shade and use soothing treatments like aloe vera.
Systemic overdose via topical application is virtually impossible due to the lack of absorption. However, accidental ingestion can occur, particularly in children.
> Important: Follow your healthcare provider's or the product manufacturer's dosing instructions. Do not adjust the amount used based on perceived 'tanning' ability, as any tan represents skin damage.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is exceptionally well-tolerated compared to older chemical filters. However, some users may experience:
> Warning: Stop using products containing Bis-ethylhexyloxyphenol Methoxyphenyl Triazine and call your doctor immediately if you experience any of these symptoms, which may indicate a severe allergic reaction (anaphylaxis):
There are currently no documented long-term adverse effects associated with the regular use of Bis-ethylhexyloxyphenol Methoxyphenyl Triazine. Unlike some older filters that have raised concerns regarding bioaccumulation in the environment or human tissue, this molecule's large size and photostability make it an unlikely candidate for long-term toxicity. In fact, the long-term 'side effect' of consistent use is a significant reduction in the clinical markers of skin aging and a lower incidence of skin cancers.
As of 2026, there are no FDA or EMA black box warnings for Bis-ethylhexyloxyphenol Methoxyphenyl Triazine. It is considered one of the safest UV filters in global dermatological practice.
Report any unusual symptoms or persistent skin changes to your healthcare provider or dermatologist. If you have a history of multiple chemical sensitivities, consider performing a patch test on a small area of the inner forearm for 48 hours before widespread use.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is for external use only. It must not be ingested, injected, or applied to mucosal membranes (such as the inside of the mouth or nose). While it is highly effective, no sunscreen provides 100% protection against UV radiation. It should be used as one component of a comprehensive sun safety strategy that includes seeking shade during peak hours (10 AM to 4 PM) and wearing protective clothing, hats, and UV-rated sunglasses.
No FDA black box warnings for Bis-ethylhexyloxyphenol Methoxyphenyl Triazine. It is categorized as a safe and effective UV filter in the jurisdictions where it is approved.
Individuals with a known hypersensitivity to triazine-derivative compounds should avoid this ingredient. While cross-reactivity is rare, patients who have reacted to other 'Tinosorb' or 'Uvinul' class filters should proceed with extreme caution and consult an allergist.
Recent studies have scrutinized the impact of UV filters on marine ecosystems, particularly coral reefs. Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is generally considered more 'reef-friendly' than Oxybenzone or Octinoxate because it does not promote coral bleaching in the same concentrations; however, patients should check local regulations in sensitive ecological zones (e.g., Hawaii, Palau).
There are no specific laboratory tests (e.g., blood counts or liver panels) required for patients using this ingredient. However, patients should perform:
This medication has no known effect on the ability to drive or operate heavy machinery. If the product accidentally gets into the eyes and causes blurred vision, wait until vision clears before driving.
There are no known interactions between topically applied Bis-ethylhexyloxyphenol Methoxyphenyl Triazine and the consumption of alcohol. However, alcohol consumption can lead to dehydration and may impair one's judgment regarding the need for sunscreen reapplication.
There is no withdrawal syndrome associated with stopping the use of this ingredient. However, discontinuation will immediately remove the skin's protection against UV radiation, increasing the risk of sunburn and long-term damage.
> Important: Discuss all your medical conditions, especially pre-existing skin diseases like eczema or psoriasis, with your healthcare provider before starting a new regimen containing Bis-ethylhexyloxyphenol Methoxyphenyl Triazine.
There are no known drug-drug interactions where Bis-ethylhexyloxyphenol Methoxyphenyl Triazine must NEVER be used. Because it remains on the skin surface, it does not interfere with systemic medications. However, it should not be mixed directly in the palm with other sunscreens unless they are from the same manufacturer, as the different emulsifiers may cause the products to 'clump' or 'pill,' destroying the protective film.
There are no known interactions with food, including grapefruit, dairy, or high-fat meals. The efficacy of the product is entirely independent of diet.
There are no documented interactions with St. John's Wort, Ginkgo, or other common supplements. However, some supplements (like St. John's Wort) can increase systemic photosensitivity. If you are taking such supplements, the use of Bis-ethylhexyloxyphenol Methoxyphenyl Triazine becomes even more critical to prevent severe burns.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine does not interfere with standard blood or urine laboratory tests. It does not cause false positives in drug screenings.
Most interactions involving this ingredient are physicochemical rather than pharmacological. They involve the disruption of the 'thin film' that the product forms on the skin. If this film is broken by other topical agents, the UV protection becomes 'patchy,' leading to 'missed spots' where UV rays can penetrate.
To avoid interactions:
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, especially those that increase sun sensitivity (like tetracycline antibiotics or diuretics).
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine must NEVER be used in the following circumstances:
Conditions requiring careful risk-benefit analysis by a physician:
Patients who are allergic to certain dyes or plastic stabilizers may occasionally show cross-sensitivity to triazine derivatives, although this is clinically rare. If you have had a severe reaction to 'Tinosorb M' (Methylene Bis-Benzotriazolyl Tetramethylbutylphenol), you should be cautious when using 'Tinosorb S' (the subject of this guide).
> Important: Your healthcare provider will evaluate your complete medical history, including any history of 'sun poisoning' or cosmetic allergies, before recommending specific photoprotective products.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is generally considered one of the safest UV filters for use during pregnancy. Because its molecular weight is high (>600 Daltons), it does not cross the skin barrier in significant amounts, meaning there is virtually no systemic exposure to the developing fetus. Unlike Oxybenzone, which has been detected in maternal blood and urine and raised concerns about birth weights, Bis-ethylhexyloxyphenol Methoxyphenyl Triazine has shown no such risks in available clinical literature. However, pregnant women often develop 'melasma' (the mask of pregnancy), so consistent use of this filter is often recommended by obstetricians to prevent permanent skin darkening.
There is no evidence that topically applied Bis-ethylhexyloxyphenol Methoxyphenyl Triazine passes into breast milk. Given its lack of systemic absorption, the risk to a nursing infant is considered negligible. Care should be taken to avoid applying the product directly to the nipple or areola area to prevent the infant from ingesting it during feeding.
Elderly patients are at a higher risk for skin cancer due to cumulative lifetime UV exposure. Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is highly recommended for this population. Considerations include:
No dosage adjustment is needed. The drug does not rely on renal clearance for its primary function or elimination.
No dosage adjustment is needed. The drug does not undergo hepatic metabolism.
> Important: Special populations, particularly pregnant women and those with chronic skin conditions, require an individualized medical assessment by a healthcare provider.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is a broad-spectrum UV absorber. It operates via the absorption of electromagnetic radiation in the ultraviolet spectrum. Specifically, it has two absorption peaks: one in the UVB range (approx. 310 nm) and a significantly more important one in the UVA range (approx. 340 nm). The triazine core is an electron-deficient aromatic system that, when substituted with electron-donating phenolic groups, creates a highly efficient 'energy sink.' This allows the molecule to undergo excited-state intramolecular proton transfer (ESIPT), a process that converts UV energy into harmless thermal energy (heat) without the molecule breaking apart.
| Parameter | Value |
|---|---|
| Bioavailability | <0.1% (Topical) |
| Protein Binding | N/A (Systemic levels negligible) |
| Half-life | N/A (Not systemically metabolized) |
| Tmax | N/A (No systemic peak) |
| Molecular Weight | 627.8 g/mol |
| Excretion | Mechanical (Shedding of skin) |
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is classified as a Hydroxyphenyltriazine UV filter. It is related to other modern filters like Ethylhexyl Triazone (Uvinul T 150) and Diethylhexyl Butamido Triazone (Uvasorb HEB), but it is unique in its balanced broad-spectrum (UVA + UVB) coverage.
Medications containing this ingredient
Common questions about Bis-ethylhexyloxyphenol Methoxyphenyl Triazine
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is primarily used as a high-performance active ingredient in sunscreens to protect the skin from the harmful effects of the sun. It provides broad-spectrum coverage, meaning it shields the skin from both UVB rays, which cause sunburn, and UVA rays, which lead to premature aging and long-term DNA damage. By absorbing these rays and converting them into harmless heat, it helps prevent skin cancer, wrinkles, and sunspots. It is frequently found in high-SPF dermatological products due to its exceptional stability under sunlight. Many doctors recommend formulations containing this ingredient for patients with photosensitivity disorders or those at high risk for skin malignancies.
The most common side effects are localized and mild, typically involving skin irritation such as slight redness, itching, or a tingling sensation at the application site. Because it is often used in oil-based formulas, some users with oily or acne-prone skin might experience clogged pores or minor breakouts. If the product accidentally enters the eyes through sweating or improper application, it can cause temporary stinging and watering. Unlike older chemical filters, it has a very low rate of causing true allergic contact dermatitis or photoallergy. Most people find it significantly more comfortable and less irritating than traditional sunscreens containing oxybenzone or paba. If a persistent rash develops, you should discontinue use and consult a dermatologist.
Yes, there are no known contraindications or dangerous interactions between the consumption of alcohol and the topical use of Bis-ethylhexyloxyphenol Methoxyphenyl Triazine. Since the ingredient is not absorbed into your bloodstream in any significant amount, alcohol cannot interact with it systemically. However, it is important to remember that alcohol can cause dehydration and may make you less aware of how much time you are spending in the sun. This could lead to a failure to reapply your sunscreen every two hours as required. For the best skin health, ensure you stay hydrated with water and maintain your sun protection routine even if consuming alcohol. Always follow the safety guidelines provided by your healthcare provider regarding sun exposure.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is widely considered one of the safest UV filters for use during pregnancy. Its large molecular size prevents it from being absorbed through the skin and into the mother's bloodstream, which means there is no significant exposure to the developing fetus. Clinical data from regions where it is commonly used, such as Europe and Australia, have shown no adverse effects on pregnancy outcomes. Many dermatologists actually recommend its use during pregnancy to help manage melasma, a common condition where hormonal changes cause dark patches on the skin. While it is considered safe, it is always a good practice to discuss any new skincare product with your obstetrician or healthcare provider. They can help you choose a formulation that is free from other potentially irritating additives like heavy fragrances.
Formulations containing Bis-ethylhexyloxyphenol Methoxyphenyl Triazine begin working as soon as they are applied to the skin and form a uniform film. However, most experts recommend waiting 15 to 20 minutes before going outdoors into direct sunlight. This 'wait time' allows the product to set properly on the skin surface and prevents it from being easily rubbed off by clothing or diluted by immediate sweating. The protection is chemical in nature, so it starts absorbing UV rays the moment they hit the treated area. It is vital to ensure the application is thick and even to avoid 'gaps' in protection. Once applied, the filter is highly photostable, meaning it doesn't break down quickly, but you still must reapply every two hours for continuous safety.
Yes, you can stop using products containing this ingredient at any time without experiencing any withdrawal symptoms or physiological side effects. Because it is a topical agent that does not alter your body's internal chemistry, there is no need to 'taper off' its use. However, the moment you stop applying the product, your skin loses its enhanced protection against ultraviolet radiation. This means that if you go outside without an alternative form of protection, you will be at immediate risk for sunburn and long-term UV damage. If you find that this specific ingredient does not suit your skin, you should switch to another form of sun protection, such as a mineral-based sunscreen, rather than stopping protection entirely. Consult your doctor if you are stopping use due to a suspected allergic reaction.
In the context of sun protection, a 'missed dose' means you have gone into the sun without applying the product or have forgotten to reapply it after two hours. If this happens, you should apply the product as soon as you realize the omission, provided you are still in the sun. If you have already been burned, applying the sunscreen will not heal the burn, but it will prevent further damage from occurring. If you cannot apply the product immediately, the best course of action is to seek total shade or cover your skin with clothing until you can reapply. Do not double the amount of product used in an attempt to 'make up' for the missed time, as the thickness of the application should always follow the standard 2mg/cm² rule. Regular reapplication is the key to maintaining the labeled SPF protection.
No, Bis-ethylhexyloxyphenol Methoxyphenyl Triazine does not cause weight gain. Weight gain is typically a result of systemic changes in metabolism, hormonal shifts, or caloric imbalance, none of which are affected by a topical UV filter. Because the molecule is too large to enter the bloodstream, it cannot interact with the metabolic processes or endocrine system that regulate body weight. There are no clinical studies or patient reports suggesting any link between the use of this sunscreen agent and changes in body mass. If you are experiencing unexpected weight gain, it is likely due to other factors such as diet, exercise, or an underlying medical condition, and you should discuss these concerns with your primary care physician. You can continue to use this sun protection safely without fear of affecting your weight.
Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is safe to use alongside almost all oral medications because it is not absorbed systemically and therefore cannot interact with drugs in your liver or bloodstream. When it comes to other topical medications, such as acne creams or prescription steroids, it is generally safe but requires proper layering. You should apply your medicated creams first, allow them to absorb completely into the skin, and then apply the sunscreen as a final protective layer. Some medications, like certain antibiotics or retinoids, can make your skin more sensitive to light; in these cases, using this UV filter is actually highly recommended to prevent severe reactions. Always inform your doctor about all the products you are using to ensure the most effective treatment plan for your skin.
In the world of sunscreens, 'generic' usually refers to store-brand or budget-friendly versions of sun protection products. Bis-ethylhexyloxyphenol Methoxyphenyl Triazine is an active ingredient manufactured by several chemical companies (most notably BASF under the name Tinosorb S) and is included in a wide variety of both luxury and affordable sunscreen brands. While you won't find a product simply labeled 'Generic Bis-ethylhexyloxyphenol Methoxyphenyl Triazine,' you can find it listed in the 'Active Ingredients' or 'Ingredients' section of many different sunscreens. In regions like Europe and Australia, it is very common in both high-end pharmacy brands and supermarket-brand sunscreens. To find it, look for 'Bemotrizinol' or the full chemical name on the label. Its availability in the United States is currently more limited due to ongoing FDA regulatory reviews.