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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Other
Diethylamino Hydroxybenzoyl Hexyl Benzoate is a high-performance, photostable UVA filter used in topical sunscreens and dermatological products to provide broad-spectrum protection against photoaging and skin damage.
Name
Diethylamino Hydroxybenzoyl Hexyl
Raw Name
DIETHYLAMINO HYDROXYBENZOYL HEXYL BENZOATE
Category
Other
Salt Form
Benzoate
Drug Count
4
Variant Count
4
Last Verified
February 17, 2026
About Diethylamino Hydroxybenzoyl Hexyl
Diethylamino Hydroxybenzoyl Hexyl Benzoate is a high-performance, photostable UVA filter used in topical sunscreens and dermatological products to provide broad-spectrum protection against photoaging and skin damage.
Detailed information about Diethylamino Hydroxybenzoyl Hexyl
References used for this content
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Diethylamino Hydroxybenzoyl Hexyl.
Diethylamino Hydroxybenzoyl Hexyl Benzoate (DHHB) is a sophisticated, organic chemical compound that serves as a high-performance ultraviolet (UV) filter. It belongs to the class of benzoyl benzoates and is primarily utilized in topical dermatological formulations, such as sunscreens, daily moisturizers, and anti-aging creams. In the realm of pharmacological classification, DHHB is categorized as a photoprotective agent, specifically focusing on the UVA spectrum (320–400 nm). Unlike older generations of UV filters that often suffered from rapid degradation upon exposure to sunlight, DHHB is celebrated for its exceptional photostability. This means it maintains its protective integrity for extended periods, providing consistent defense against the harmful effects of solar radiation.
While DHHB is widely approved and utilized in Europe (under the European Union’s Cosmetics Regulation), Australia (TGA), Japan, and South America, its regulatory status in the United States remains under the jurisdiction of the Food and Drug Administration (FDA) as part of the ongoing review of over-the-counter (OTC) sunscreen ingredients. It is often marketed under the trade name Uvinul A Plus. The primary objective of DHHB is to mitigate the risk of photoaging—a process characterized by the development of wrinkles, loss of skin elasticity, and hyperpigmentation—and to provide a secondary layer of defense against skin cancers by reducing the cumulative UVA-induced DNA damage in dermal cells.
The mechanism of action for Diethylamino Hydroxybenzoyl Hexyl Benzoate is rooted in the principles of photophysics. When UV radiation hits the skin, DHHB molecules absorb the high-energy photons associated with UVA light. Specifically, the chemical structure of DHHB allows it to capture energy in the 320 to 400 nm range, with a peak absorption (lambda max) at approximately 354 nm. This range is critical because UVA rays penetrate deeper into the dermis than UVB rays, leading to the generation of reactive oxygen species (ROS) and the breakdown of collagen and elastin fibers.
Upon absorbing a UV photon, the DHHB molecule transitions from a ground state to an electronically excited state. To return to its stable ground state, the molecule must dissipate this captured energy. DHHB does this efficiently through internal conversion, releasing the energy as harmless heat or vibrational energy rather than allowing it to trigger chemical reactions in the skin. Because DHHB does not break down during this process (a property known as photostability), it can repeatedly absorb and dissipate UV energy without losing its efficacy. This is a significant clinical advantage over ingredients like Avobenzone, which often require stabilizers to prevent rapid degradation.
Diethylamino Hydroxybenzoyl Hexyl Benzoate is indicated for the following uses:
DHHB is not available as an oral or injectable medication. It is found exclusively in topical formulations, including:
> Important: Only your healthcare provider or a board-certified dermatologist can determine if products containing Diethylamino Hydroxybenzoyl Hexyl Benzoate are appropriate for your specific skin type and medical history.
For effective photoprotection, Diethylamino Hydroxybenzoyl Hexyl Benzoate must be applied in sufficient quantities. Clinical standards established by regulatory bodies like the FDA and the European Medicines Agency (EMA) suggest an application density of 2 mg/cm² of skin. For an average adult, this translates to approximately:
No dosage adjustment is required for patients with renal impairment, as systemic absorption of topically applied DHHB is negligible.
No dosage adjustment is required for patients with hepatic impairment due to the lack of systemic circulation and minimal metabolic burden.
Elderly patients often have thinner skin (atrophic skin). While this could theoretically increase absorption, studies have not shown a need for dosage modification. However, elderly patients should be monitored for signs of localized skin irritation.
If you forget to apply DHHB before going outdoors, apply it as soon as you remember. However, be aware that your skin may have already sustained UV damage. Seek shade until the product has had time to set.
Systemic overdose from topical application is virtually impossible. However, accidental ingestion can occur, particularly in children. Signs of ingestion may include gastrointestinal upset, nausea, or vomiting. In case of ingestion, contact a Poison Control Center immediately. If the product gets into the eyes, flush with copious amounts of lukewarm water for at least 15 minutes.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your application frequency or amount without medical guidance, as this may lead to inadequate protection and increased risk of sunburn.
While Diethylamino Hydroxybenzoyl Hexyl Benzoate is generally well-tolerated, some users may experience localized skin reactions. These are typically mild and transient:
> Warning: Stop using products containing Diethylamino Hydroxybenzoyl Hexyl Benzoate and call your doctor immediately if you experience any of these.
There is currently no clinical evidence suggesting that long-term use of Diethylamino Hydroxybenzoyl Hexyl Benzoate leads to systemic toxicity, hormonal disruption, or organ damage. Because it lacks the estrogenic activity associated with some older filters like Oxybenzone, it is considered safe for daily, long-term use. The primary "effect" of long-term use is the significant reduction in cumulative UV damage and a lower risk of skin malignancies.
No FDA black box warnings have been issued for Diethylamino Hydroxybenzoyl Hexyl Benzoate. It is not classified as a high-risk medication. However, users should always perform a patch test if they have a history of multiple chemical sensitivities.
Report any unusual symptoms or persistent skin changes to your healthcare provider. Monitoring for changes in moles (the ABCDE rule) remains essential even when using high-quality sun protection.
Diethylamino Hydroxybenzoyl Hexyl Benzoate is for external use only. It should never be ingested or applied to mucosal membranes (inside the mouth, nose, or genital area). While it provides significant protection against UVA radiation, no sunscreen provides 100% protection. Users should employ a multi-faceted approach to sun safety, including wearing protective clothing, seeking shade during peak UV hours (10 AM to 4 PM), and wearing UV-rated sunglasses.
There are no FDA black box warnings for Diethylamino Hydroxybenzoyl Hexyl Benzoate. It is widely recognized by international health authorities as having a favorable safety profile for topical application.
There are no specific laboratory monitoring requirements (such as blood counts or liver function tests) for patients using DHHB. However, regular dermatological exams are recommended for all individuals, especially those with a history of significant sun exposure or a family history of skin cancer. Patients should self-monitor for any new or changing moles.
Topical application of Diethylamino Hydroxybenzoyl Hexyl Benzoate does not impair the ability to drive or operate heavy machinery. It has no sedative or psychoactive effects.
There are no known interactions between topical DHHB and the consumption of alcohol. However, alcohol consumption can lead to dehydration and may increase the skin's sensitivity to heat, so adequate hydration is advised during sun exposure.
If a skin rash or irritation develops, discontinue use immediately. There is no withdrawal syndrome associated with stopping the use of UV filters. However, stopping use will immediately remove the protective barrier against UVA radiation, increasing the risk of sunburn and long-term skin damage.
> Important: Discuss all your medical conditions, especially inflammatory skin conditions like eczema or psoriasis, with your healthcare provider before starting a new skincare regimen containing Diethylamino Hydroxybenzoyl Hexyl Benzoate.
There are no known drug-drug interactions that are strictly contraindicated with the topical use of Diethylamino Hydroxybenzoyl Hexyl Benzoate. Because it acts as a physical/chemical barrier on the skin surface and does not enter the bloodstream in significant amounts, it does not interfere with systemic medications.
There are no known interactions between Diethylamino Hydroxybenzoyl Hexyl Benzoate and any foods, including grapefruit, dairy, or high-fat meals. The topical nature of the product precludes any digestive-system-based interactions.
There are no documented interactions between topical DHHB and herbal supplements like St. John's Wort or Ginkgo Biloba. However, some supplements (like St. John's Wort) can cause systemic photosensitivity. If you are taking such supplements, the use of a high-UVA filter like DHHB is even more critical, though you should still consult your doctor about your increased risk of sun reactions.
Diethylamino Hydroxybenzoyl Hexyl Benzoate does not interfere with standard blood, urine, or imaging tests. It does not alter glucose levels, coagulation markers, or liver enzyme panels.
Most interactions involving DHHB are pharmacodynamic in nature, occurring on the skin surface. For example, the synergy between DHHB and Ethylhexyl Triazone (a UVB filter) allows for a higher SPF and UVA-PF (UVA Protection Factor) than either could achieve alone. This is managed by cosmetic chemists during the formulation process to ensure stability and efficacy.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, even if they are topical or over-the-counter.
Diethylamino Hydroxybenzoyl Hexyl Benzoate must NEVER be used in the following circumstances:
Conditions requiring careful risk-benefit analysis and a doctor's consultation include:
There is a theoretical risk of cross-sensitivity for individuals allergic to other benzoate esters or certain local anesthetics (like procaine) that share a similar benzoic acid backbone. If you have a known allergy to "caine" anesthetics, discuss this with your dermatologist before using DHHB.
> Important: Your healthcare provider will evaluate your complete medical history, including any history of skin allergies, before prescribing or recommending products containing Diethylamino Hydroxybenzoyl Hexyl Benzoate.
No adjustments are needed. The kidneys are not involved in the clearance of topically applied DHHB under normal conditions.
No adjustments are needed. There is no significant hepatic first-pass metabolism for topical applications.
> Important: Special populations, particularly pregnant women and those with chronic skin conditions, require an individualized medical assessment by a healthcare professional.
Diethylamino Hydroxybenzoyl Hexyl Benzoate functions as a chemical UVA filter. At the molecular level, it contains a conjugated system of double bonds within its benzoyl group. This configuration allows the molecule to absorb the energy of UVA photons. The absorbed energy promotes an electron from the Highest Occupied Molecular Orbital (HOMO) to the Lowest Unoccupied Molecular Orbital (LUMO). This energy is then dissipated through a process called "internal conversion," where the electronic energy is converted into vibrational energy (heat) and released to the surrounding environment. This allows the molecule to return to its ground state without undergoing chemical degradation, making it highly photostable.
| Parameter | Value |
|---|---|
| Bioavailability | < 0.1% (Topical) |
| Protein Binding | N/A (Negligible systemic levels) |
| Half-life | N/A (Not systemically active) |
| Tmax | N/A |
| Metabolism | Minimal (Esterase hydrolysis) |
| Excretion | Physical shedding/washing |
DHHB belongs to the class of Organic UVA Filters. It is often grouped with other "modern" filters like Tinosorb S and Tinosorb M, which are characterized by higher molecular weights and better safety profiles than older "legacy" filters like Oxybenzone or Octocrylene.
Medications containing this ingredient
Common questions about Diethylamino Hydroxybenzoyl Hexyl
Diethylamino Hydroxybenzoyl Hexyl Benzoate is primarily used as a chemical UV filter in sunscreens and skincare products to provide protection against UVA radiation. UVA rays are responsible for deep skin damage, including the breakdown of collagen and elastin, which leads to premature aging and wrinkles. By absorbing these rays, DHHB helps prevent photoaging and reduces the risk of long-term skin damage and certain types of skin cancer. It is highly valued in the cosmetic industry for its photostability, meaning it does not break down quickly when exposed to sunlight. This ingredient is commonly found in daily moisturizers, anti-aging creams, and high-SPF sunscreens designed for sensitive skin.
The most common side effects associated with Diethylamino Hydroxybenzoyl Hexyl Benzoate are localized skin reactions such as mild stinging, redness, or itching at the site of application. Because it is a topical product with very low skin penetration, systemic side effects are virtually non-existent. Some users may experience contact dermatitis, which is often a reaction to other ingredients in the sunscreen like fragrances or preservatives rather than the DHHB itself. If you have sensitive skin, you might notice a temporary feeling of warmth or a slight rash. These symptoms usually resolve quickly once the product is washed off. Always perform a patch test if you are trying a new product containing this ingredient.
Yes, you can consume alcohol while using products that contain Diethylamino Hydroxybenzoyl Hexyl Benzoate. Since this is a topical ingredient that does not enter your bloodstream in significant amounts, there is no direct chemical interaction between the UV filter and alcohol. However, it is important to remember that alcohol can dehydrate your body and may make your skin more sensitive to the sun's heat. Additionally, being under the influence of alcohol might make you less likely to remember to reapply your sunscreen every two hours. For the best skin health, stay hydrated with water while spending time in the sun. Always follow standard sun safety precautions regardless of alcohol consumption.
Diethylamino Hydroxybenzoyl Hexyl Benzoate is generally considered safe for use during pregnancy by many international health experts and dermatologists. Unlike some older UV filters like Oxybenzone, DHHB has not shown evidence of endocrine disruption or hormonal activity in clinical studies. Because it has extremely low systemic absorption, it does not reach the developing fetus in any meaningful amount. Animal studies have confirmed that even at very high oral doses, it does not cause birth defects or reproductive issues. However, because every pregnancy is unique, it is always a good idea to consult with your obstetrician or dermatologist before starting a new skincare routine. They can help you choose the most appropriate sun protection for your specific needs.
Products containing Diethylamino Hydroxybenzoyl Hexyl Benzoate begin absorbing UV rays as soon as they are applied to the skin. However, it is clinically recommended to wait 15 to 30 minutes before going out into direct sunlight. This waiting period allows the lotion or cream to form a uniform, protective film on the skin's surface and ensures that the active ingredients are properly distributed. If you go outside immediately after application, the product may be more easily rubbed off by clothing or diluted by sweat, leading to uneven protection. For maximum efficacy, ensure the skin is dry before application. Consistent reapplication every two hours is necessary to maintain this protection throughout the day.
Yes, you can stop using products containing Diethylamino Hydroxybenzoyl Hexyl Benzoate at any time without experiencing withdrawal symptoms or adverse physiological effects. Unlike systemic medications, your body does not develop a dependence on topical UV filters. However, the moment you stop applying the product, your skin will lose its chemical shield against UVA radiation. This means you will immediately become more susceptible to sun damage, photoaging, and sunburn if you spend time outdoors without an alternative form of protection. If you decide to stop using a specific product due to irritation, it is important to find another form of sun protection, such as a mineral-based sunscreen or protective clothing, to maintain your skin health.
If you forget to apply your sunscreen containing Diethylamino Hydroxybenzoyl Hexyl Benzoate before going outside, apply it as soon as you realize the omission. While the missed application means your skin was unprotected for a period, applying it later will still help prevent further damage for the remainder of your time outdoors. If you have already developed a sunburn, avoid further sun exposure and do not apply chemical sunscreens to the damaged, peeling skin until it has healed. Instead, use soothing aloe vera and keep the area covered with loose clothing. Remember that sun damage is cumulative, so try to make application a part of your daily morning routine to avoid future missed doses.
No, Diethylamino Hydroxybenzoyl Hexyl Benzoate does not cause weight gain. Weight gain is typically a result of systemic changes in metabolism, caloric intake, or hormonal balance, none of which are affected by the topical application of this UV filter. Because DHHB remains on the surface of the skin and does not enter the bloodstream or affect the endocrine system, it has no way of influencing your body weight. Any changes in weight you experience while using this product would be due to other factors, such as diet, exercise, or other medications you may be taking. You can use sunscreens containing this ingredient daily without any concern regarding your weight or metabolic health.
Yes, Diethylamino Hydroxybenzoyl Hexyl Benzoate can be used alongside almost all other medications. Because it is applied topically and has negligible systemic absorption, it does not interfere with oral medications like blood pressure pills, antibiotics, or antidepressants. It is also safe to use with most other topical treatments, though you should be careful when using it with strong exfoliants like retinoids or high-strength acids, as these can make your skin more sensitive to irritation. If you are using a prescription skin cream, it is usually best to apply the medicated cream first, wait for it to absorb, and then apply the sunscreen. Always inform your doctor about all the products you are using on your skin.
Diethylamino Hydroxybenzoyl Hexyl Benzoate is a specific chemical ingredient rather than a brand-name drug, so the concept of 'generic' doesn't apply in the same way it does to prescription pills. However, it is used by many different manufacturers in a wide variety of sunscreen brands, ranging from high-end dermatological lines to affordable drugstore options. You can find it listed in the 'Active Ingredients' or 'Inci List' on the back of many sun protection products. While the trade name for the raw material is often Uvinul A Plus, the chemical name will be listed on the packaging. This allows you to choose a product that fits your budget while still getting the high-quality UVA protection that this specific molecule provides.