{"title":"Ethylbisiminomethylguaiacol Manganese Chloride","description":null,"products":[{"product_id":"euk-134-0-1-percent-the-ordinary-usa","title":"EUK 134 0.1%","description":"\u003cdiv class=\"product-description-us\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eWhat does The Ordinary EUK 134 0.1% do?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe Ordinary EUK 134 0.1% is a highly sophisticated, high-performance antioxidant treatment designed to provide an unparalleled biological shield against oxidative stress. Often referred to in the clinical skincare community as a \"perpetual motion machine\" for the skin, this anhydrous (water-free) serum utilizes one of the most advanced molecules in modern dermatology: EUK 134™. Unlike standard antioxidants such as Vitamin C or Vitamin E, which are \"sacrificial\" (meaning they are consumed and neutralized after reacting with a single free radical), EUK 134™ is a self-regenerating mimetic of two naturally occurring enzymes in the human body: Superoxide Dismutase (SOD) and Catalase. This unique molecular structure allows it to continuously scavenge and neutralize harmful reactive oxygen species (ROS) all day and night without losing its clinical potency. It functions as a comprehensive defense system that targets persistent dullness, lackluster skin tone, and the visible signs of environmental aging. By maintaining a 0.1% concentration—an exceptionally high level compared to market competitors—this serum ensures that your complexion remains visibly radiant, healthy-looking, and protected from the chronic irritation caused by external aggressors. It is the ultimate tool for those seeking a one-drop solution to maintain skin grain integrity and long-term luminosity. Available for fast US delivery at theordinaryusa.co.\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eWhy The Ordinary EUK 134 0.1% is a US Skincare Essential\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eIn the United States, the skin is subject to a staggering variety of environmental pressures that vary significantly by geography and lifestyle. For American consumers residing in major metropolitan hubs like New York City, Houston, Chicago, or Los Angeles, the prevalence of urban pollution, ozone, and particulate matter creates a high-oxidative environment that can lead to \"City Skin\"—a condition characterized by sallow dullness, enlarged pores, and premature fine lines. Conversely, in the high-UV regions of the Sun Belt—stretching from Florida across to the Southwest and California—the skin requires advanced antioxidant support to mitigate the oxidative damage caused by intense solar radiation. The Ordinary EUK 134 0.1% is a US essential because its self-regenerating nature provides a stable, around-the-clock defense that doesn't \"run out\" during a busy American day. Its anhydrous, oil-like format is particularly suited for the diverse US climate; it prevents transepidermal water loss (TEWL) in the arid West while remaining lightweight enough to layer under sunscreen in the humid South. It meets the growing demand in the USA for high-tech, clinical-grade \"Clean Beauty\" that prioritizes molecular stability and transparent performance. Whether you are navigating a smog-heavy commute or dealing with the blue light of a digital-centric workplace, this serum provides the resilient antioxidant infrastructure needed to keep your skin looking polished and protected in any regional environment.\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eKey Benefits of The Ordinary EUK 134 0.1%\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Self-Regenerating Technology:\u003c\/strong\u003e EUK 134™ continues to neutralize free radicals over extended periods without degrading or being consumed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Enzyme Mimicry:\u003c\/strong\u003e Replicates the activity of Superoxide Dismutase (SOD) and Catalase to provide biological-grade antioxidant defense.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntensive Radiance Boost:\u003c\/strong\u003e Actively transforms \"tired,\" gray, or dull complexions into a state of visible, glowing health and vibrancy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Urban Pollution Shield:\u003c\/strong\u003e Protects the skin barrier from the damaging effects of smog, smoke, and environmental particulate matter found in major US cities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Potency Clinical Concentration:\u003c\/strong\u003e Formulated at 0.1%, one of the highest available concentrations of this expensive and rare molecule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents Oxidative Irritation:\u003c\/strong\u003e Helps calm the visible effects of environmental stress and reduces the appearance of reactive redness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Anti-Aging Support:\u003c\/strong\u003e Shields skin structural proteins from the free radical damage that leads to collagen loss and wrinkles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnhydrous Stability:\u003c\/strong\u003e Formulated in a water-free base to ensure the molecule remains active and protected from light-induced oxidation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeightless Silk Finish:\u003c\/strong\u003e While it feels like a dry oil, it absorbs smoothly without leaving a greasy or heavy residue on the skin surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Comedogenic Hydration:\u003c\/strong\u003e Provides a protective cushion of moisture that won't clog pores, making it safe for all skin profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCumulative Radiance Results:\u003c\/strong\u003e Regular use leads to a measurably more transparent, uniform, and luminous skin grain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEthically \u0026amp; Sustainably Produced:\u003c\/strong\u003e A 100% vegan and cruelty-free formula that meets the highest US standards for clinical transparency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eKey Ingredients and The Science Behind Them\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003e0.1% EUK 134™ (Ethylbisiminomethylguaiacol Manganese Chloride)\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe science of EUK 134™ is centered on its status as a synthetic \u003cstrong\u003esalen-manganese complex\u003c\/strong\u003e. In the biology of human skin, Superoxide Dismutase (SOD) is the enzyme responsible for converting the harmful superoxide radical into oxygen and hydrogen peroxide, while Catalase converts hydrogen peroxide into water and oxygen. EUK 134™ is unique in the world of clinical skincare because it exhibits \u003cstrong\u003ecatalytic activity\u003c\/strong\u003e for both of these enzymatic reactions simultaneously. This \"cross-talk\" allows it to neutralize two of the most damaging reactive oxygen species found in US urban environments in a single molecular step. Because the molecule is catalytic, it is not \"used up\" in the process; it returns to its active state after each reaction, providing a continuous cycle of protection. This molecular science is exceptionally sensitive to acidic environments, which is why the formula is strictly \u003cstrong\u003eAnhydrous\u003c\/strong\u003e (water-free). By suspending the molecule in a stable propanediol base, we preserve its pKa and molecular integrity, ensuring that it delivers maximum biological defense from the moment of application until the next cleansing cycle.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eSpecifications Table\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eEUK 134 0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eThe Ordinary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eAnhydrous (Water-Free) Solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey Active\u003c\/td\u003e\n\u003ctd\u003e0.1% EUK 134™ (Salen-Manganese Complex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Level\u003c\/td\u003e\n\u003ctd\u003eN\/A (Water-Free Formula)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTargets\u003c\/td\u003e\n\u003ctd\u003eDullness, Environmental Stress, Oxidative Damage, Redness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuited To\u003c\/td\u003e\n\u003ctd\u003eAll Skin Types (Ideal for Urban\/High-Stress Environments)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e30mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVegan \/ Cruelty-Free\u003c\/td\u003e\n\u003ctd\u003eYes \/ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUS Availability\u003c\/td\u003e\n\u003ctd\u003eOfficial US Store — theordinaryusa.co\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eHow to Use The Ordinary EUK 134 0.1%\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eTo maximize the self-regenerating antioxidant benefits of this formula, strict adherence to application protocols and compatibility rules is essential:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Start with a clean, dry face. We recommend using a gentle, non-stripping cleanser like the Squalane Cleanser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming:\u003c\/strong\u003e Use alone or after water-based serums. We highly recommend application in the \u003cstrong\u003emorning (AM)\u003c\/strong\u003e to provide a proactive shield against daytime environmental stressors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Dispense 2-3 drops into the palms of your hands and press gently onto the face and neck. A small amount is highly concentrated and spreads easily.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequence:\u003c\/strong\u003e Apply \u003cem\u003eafter\u003c\/em\u003e water-based serums but \u003cem\u003ebefore\u003c\/em\u003e heavy creams, moisturizers, or facial oils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSTRICT CONFLICTS:\u003c\/strong\u003e Do NOT use EUK 134™ in the same routine as \u003cstrong\u003eDirect Acids\u003c\/strong\u003e (AHAs\/BHAs like Glycolic or Salicylic acid) or \u003cstrong\u003ePure Vitamin C\u003c\/strong\u003e (L-Ascorbic Acid or Ethylated L-Ascorbic Acid). These low-pH treatments will immediately hydrolyze and destroy the EUK 134™ molecule. Use these in the PM and EUK in the AM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e The solution has a naturally deep amber\/brown color due to the concentration of the manganese complex. This will blend out completely transparent once applied to the skin.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e Patch test before first use. Apply only to unbroken skin as directed.\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eWho is it for?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe Ordinary EUK 134 0.1% is designed for those seeking the highest level of environmental protection:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS Urban Dwellers:\u003c\/strong\u003e Individuals exposed to high levels of smog, traffic exhaust, and environmental pollutants in major cities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLackluster Complexion Profiles:\u003c\/strong\u003e Anyone whose skin looks \"gray,\" tired, or sallow from oxidative stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitive Skin Antioxidant Seekers:\u003c\/strong\u003e Those who want high-performance protection but find pure Vitamin C or high-strength acids too irritating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Aging Minimalists:\u003c\/strong\u003e People looking for a single, high-tech \"drop-in\" treatment to prevent the visible signs of future skin damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutdoor Enthusiasts:\u003c\/strong\u003e US consumers who spend significant time in the sun or wind and need an enhanced biological barrier defense.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModern Professionals:\u003c\/strong\u003e Individuals seeking to combat the oxidative effects of digital blue light and indoor air recycling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does The Ordinary EUK 134 0.1% do?\u003c\/summary\u003e\n\u003cp\u003eIt provides a continuous, self-regenerating antioxidant shield by mimicking natural skin enzymes, targeting dullness and environmental damage for a radiant, protected complexion.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy can I not use this with Vitamin C or Acids?\u003c\/summary\u003e\n\u003cp\u003eEUK 134™ is a manganese complex that is extremely sensitive to low pH (acidic) environments. Direct acids or pure Vitamin C will break the molecular bonds of the EUK, rendering it completely ineffective. Always separate them into AM\/PM routines.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this stronger than Resveratrol 3% + Ferulic Acid 3%?\u003c\/summary\u003e\n\u003cp\u003eThey are different technologies. Resveratrol\/Ferulic is a high-concentration botanical blend, whereas EUK 134™ is a catalytic enzyme mimic. EUK is often preferred for overall radiance and urban protection, while Resveratrol is excellent for advanced anti-aging. They can be layered together for the ultimate shield.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy is the serum so dark in the bottle?\u003c\/summary\u003e\n\u003cp\u003eThe deep brown\/amber color is the natural color of the EUK 134™ molecule itself. It indicates high purity and concentration. Once massaged into the skin, it becomes transparent and does not leave a tint.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes it feel oily or greasy?\u003c\/summary\u003e\n\u003cp\u003eIt has a slightly \"dry oil\" texture due to its anhydrous propanediol base. It spreads very thin and absorbs within minutes, leaving a silky finish that is compatible with makeup and sunscreen.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this with Niacinamide 10% + Zinc 1%?\u003c\/summary\u003e\n\u003cp\u003eYes! They are a fantastic combination. Niacinamide and EUK 134™ have similar pH ranges and work synergistically to brighten the skin and protect the barrier.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs it safe for use during pregnancy?\u003c\/summary\u003e\n\u003cp\u003eYes, the ingredients in EUK 134 0.1% are generally considered safe for use during pregnancy. However, we always suggest showing the ingredient list to your US physician for personalized advice.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow long will a 30mL bottle last?\u003c\/summary\u003e\n\u003cp\u003eSince only 2-3 drops are needed per day, a single bottle typically lasts between 6 and 9 months, providing exceptional clinical value.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I use this in the morning or at night?\u003c\/summary\u003e\n\u003cp\u003eWhile effective at any time, we recommend the morning (AM) to provide your skin with an active antioxidant shield during the hours when environmental exposure is at its peak.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use it if I have oily or acne-prone skin?\u003c\/summary\u003e\n\u003cp\u003eYes. The formula is non-comedogenic and lightweight. Many oily skin users find it helpful for reducing the \"gray\" look often associated with congestion and urban stress.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes it have a scent?\u003c\/summary\u003e\n\u003cp\u003eIt is 100% fragrance-free. It has a very faint, natural clinical aroma that is characteristic of the manganese complex and disappears immediately upon application.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill it help with my redness?\u003c\/summary\u003e\n\u003cp\u003eBy neutralizing the free radicals that trigger inflammation, it can help calm the appearance of environmental-induced redness, but it is not a medical treatment for clinical rosacea.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is Superoxide Dismutase?\u003c\/summary\u003e\n\u003cp\u003eSuperoxide Dismutase (SOD) is one of the skin's most powerful natural antioxidant enzymes. It breaks down harmful oxygen molecules to prevent cell damage. EUK 134™ is designed to mimic this function.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes it protect against the sun?\u003c\/summary\u003e\n\u003cp\u003eNo. While it neutralizes the oxidative stress caused by UV rays, it contains no SPF. You must always finish your morning routine with a dedicated US sunscreen.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I mix it with my moisturizer?\u003c\/summary\u003e\n\u003cp\u003eYes! You can mix 1-2 drops into your Natural Moisturizing Factors + HA in the palm of your hand to boost its antioxidant properties, provided the moisturizer is not acidic.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eComplete Your Skincare Routine...\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eBuild the ultimate environmental defense ritual at theordinaryusa.co with these complementary products:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/glucoside-foaming-cleanser\"\u003eGlucoside Foaming Cleanser\u003c\/a\u003e — The perfect gentle start to your daily routine.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/marine-hyaluronics\"\u003eMarine Hyaluronics\u003c\/a\u003e — Layer this weightless hydrator before EUK 134 for a plump glow.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/niacinamide-10-zinc-1\"\u003eNiacinamide 10% + Zinc 1%\u003c\/a\u003e — Use alongside for total oil balance and tone correction.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/natural-moisturizing-factors-ha\"\u003eNatural Moisturizing Factors + HA\u003c\/a\u003e — Finish your routine with this skin-identical moisturizer for total protection.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/multi-peptide-lash-brow-serum\"\u003eMulti-Peptide Lash and Brow Serum\u003c\/a\u003e — Complete your high-performance clinical beauty regimen for a refined look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eWhy Buy From theordinaryusa.co?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n    \u003cli\u003e🌍 \u003cstrong\u003eOfficial US store\u003c\/strong\u003e — serving all 50 states\u003c\/li\u003e\n    \u003cli\u003e🚚 \u003cstrong\u003eFast, tracked delivery\u003c\/strong\u003e across the United States\u003c\/li\u003e\n    \u003cli\u003e✅ \u003cstrong\u003e100% authentic\u003c\/strong\u003e The Ordinary products\u003c\/li\u003e\n    \u003cli\u003e🔒 \u003cstrong\u003eSecure checkout\u003c\/strong\u003e — SSL encrypted\u003c\/li\u003e\n    \u003cli\u003e💬 \u003cstrong\u003eDedicated customer support\u003c\/strong\u003e for American customers\u003c\/li\u003e\n    \u003cli\u003e🌱 \u003cstrong\u003eVegan \u0026amp; cruelty-free\u003c\/strong\u003e products only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"The Ordinary","offers":[{"title":"30ml","offer_id":45198095417423,"sku":null,"price":11.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/3355\/2975\/files\/rdn-euk-134-0-1pct-30ml.webp?v=1778411642"}],"url":"https:\/\/theordinaryusa.co\/en-ca\/collections\/ethylbisiminomethylguaiacol-manganese-chloride.oembed","provider":"The Ordinary","version":"1.0","type":"link"}