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The Ordinary EUK 134 0.1%

RM 60.00 RM 73.90
The Ordinary EUK 134 0.1% Ratings: 0 - 0 votes

Product Description

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Water-Free, High-Potency Antioxidant Formula

Protect against free radical damage and reduce redness with this powerful antioxidant serum.

Size: 30 ml

  • Water-free
  • Alcohol-free
  • Cruelty-free
  • Vegan
  • Silicone-free
  • Oil-free
  • Nut-free
  • Gluten-free
  • Soy-free

What It Is

EUK 134 0.1 % is a lightweight serum with a high concentration of EUK 134, one of the strongest antioxidants available.

What It Does

This treatment offers long-lasting protection from free radical damage and reduces visible redness.

Key Ingredients

  • EUK 134: a self-regenerating antioxidant molecule that offers around-the-clock protection against free radical damage


EUK 134 is a mimetic of superoxide dismutase and catalase, forming an exceptionally rare self-regenerating molecule that scavenges superoxide free radicals, eliminates hydrogen peroxide and converts reactive oxygen species into water and oxygen. While it has been around for many years, very few products on the market do use this truly superb antioxidant which can regenerate itself to offer round-the-clock antioxidant support. The only issue with EUK 134 is that it must not be used immediately with strong acids such as suspensions of Ascorbic Acid. Strong acids will completely destroy EUK 134 which is based on manganese. 

The low price of this formula does not reflect EUK 134's extremely high potency. EUK 134 is by far one of the strongest antioxidants available. While EUK 134 itself is very costly, the suggested concentration in any formula is below 0.05% and most formulas do not use this maximum suggestion. Our formula uses EUK 134 at an extremely high 0.1% concentration and we do not believe any product on the market today uses a higher concentration than this amount. This formula does not contain any water, silicones, oils or alcohol. Water can impair the stability of any antioxidant.

The Ordinary's antioxidant offering includes Resveratrol 3% + Ferulic Acid 3%. If you wish to take advantage of both formulas, either use them at different times or apply each in a separate step since acids and EUK 134 should not be mixed together. EUK 134 can also be mixed with most products such as Natural Moisturizing Factors + HA for a strong antioxidant boost.

EUK 134 is a third-party trademark and is used with permission.


Apply a few drops alone or after water-based treatments but before oils, moisturizers, and creams. Can be mixed with other non-acidic products for an antioxidant boost. Do not use with acidic treatments, such as those with ascorbic acid, glycolic acid, or ferulic acid. Strong acids can destroy EUK.
Do not refrigerate.


Propanediol, Ethylbisiminomethylguaiacol manganese chloride.

Our formulations are updated from time to time as part of our commitment to innovation. As such, the ingredient list shown here may vary from the box of the product depending on time and region of purchase.

Recently on Social Media

We are often asked to keep things simple so here it is... say a warm hello to ethylbisiminomethylguaiacol manganese chloride 🙈, also called EUK 134 (a "warm hello" because you'll feel a warming sensation when using EUK 134). In very simple terms, our new EUK 134 0.1% is a super-strong antioxidant that regenerates itself, unlike most antioxidants. It's best used once a day in the AM on its own or it can be mixed with non-acidic formulations if desired. Now the more complicated things... Everyone talks about antioxidants as if they're all basically the same thing. Almost everything from green tea to Vitamin C to hydroquinone is an antioxidant but most antioxidants are not able to regenerate as they scavenge free radicals. EUK 134 is a biomimetic of catalase and superoxide dismutase enzyme. It fights free radicals, reactive oxygen species (ROS) and hydrogen peroxide but after each antioxidant reaction, it regenerates itself so that it can undertake another antioxidant reaction. It's been shown to reduce visible redness and protect against appearance of UV damage. Now the PS: a) The formula is free of water, silicones, oils and alcohol; b) The 0.1% concentration is an extremely high concentration and more than 10 times the low suggested amount used in many formulations; c) EUK 134 has a brown hue. Other formulations that look more “elegant” in colour aren’t using any better form of EUK 134; they’re just using far less EUK 134; d) EUK 134 should not be combined with acids; they react very quickly (and we don’t understand why some formulas contain both acids and EUK 134); e) Don’t let the accessible price of this formula misguide you. Some brands claim that their EUK 134 costs more than $30,000+ per gram; trust us that they possibly meant $30,000+ per kilogram at most, a mistake that reflects an exaggeration of 1000 times. Yes, EUK 134 is expensive but no one we know uses anywhere close to the 0.1% that we use, which means the final formula doesn’t need to be inaccessible. ❤️🐒

A few comments on social media...

  • Love everything you do!BKT9891
  • So obsessed with you LMSHAKER
  • It's warm and looks like root beer, i love itDVDLPZNYC
  • Monkeys, i honestly fell in love with this from the first use! It's brilliance in a bottle! Love you💙💙💙💙💙🐵AMONGTHEFEW
  • Just can't thank u guys enough for all of the efforts u guys been doing this whole timeFARICASY
  • You guys are the hardest working monkeys 🐒 ever! Idk any other brand that replies as much as u doMSRESTINGNICEFACE
  • I love your guys! Love the branding and simplicity! It's so effortless yet it immediately pulls in the consumer! Keep going!KATHAR18
  • shut up and take my money!SERKOUDAKI
  • OMG!! I need this in my lifeBEAUTYBYDANAH
  • Wow, congrats in this new product. And thank you very much for your clear explanation. You are changing the common beliefs in beauty ❤️BELLEZACONK_
  • THANK YOU for explaining the science it was truly wonderful _SOPHIE_CRAIG_
  • Deciem back at it again👌🏽🐒😍ZEEZUUSS
  • I love that you guys keep the science in your products for us! As a science nerd this is an awesome, refreshing change! Don't dumb it down for us like other companies do! Stay awesomely nerdy 🤓OLIPHANTPANTSKIE
  • this just all blows me away 👏🏼😁HELLOCHRISMCKOY
  • @deciem this company is the freedom fighter of skin careNAVISTELLA
  • We loveeee your products ❤️❤️❤️ 3ANONYMOUSGIRLS
  • I felt dizzy trying to read your too scientific captions 😂😂 all i know ur products are SUPERGREAT and i love you deciem, truly 💘 u dont have to explain them im already sold!!AZAMEDUSA
  • Perfectly explained, thank you. I love it already. Order in place - Can't wait to get mine ❤️ KRAZ0N
  • I am OBSESSED with everything I use from The Ordinary. I can't believe how amazing my skin looks. Can't wait to add this to the regimen!THEDIPPEDINGLITTER
  • This sounds amazing ! Great work ❤️KELTIEPHINNEY
  • @deciem perfect, thankyou!❤own so many of your products and everything has done wonders so far my skin looks amazingMEMENTO.MORI.X
  • Marry me @deciem ❤❤ you guys!AUDIE.BENJAMIN
  • Continuing the love your transparency!SHOTBYLESLIE
  • Thank you for another great and acessible product.MARIANAMUNAYER
  • You guys are awesome! 🤗 Thanks for the innovative works that you do!TASNUVATITHI
  • I love your products!PATMANGLE
  • Love your honesty and your products ❤🐒❤ ROSARINHOML
  • I love your brand so much! ❤️ your products for their reasonable price and good results ! Can't wait to try new products DANMUSFOREVER


9.1 (37 reviews)

By SG on 27 December 2017
I use this daily under my moisturiser, sunscreen and makeup. It has done wonders for my skin, i love how it makes my skin look during the day. I've found I'm wearing less concealer when I'm using this as my skin doesn't always need it.
It's slightly warming on the skin but it's something to be alarmed with.
I tend to use this after cleansing in the morning, following the caffeine solution for my eyes and the natural moisturising factors with a sunscreen.

DECIEM Response:
Hi Sarah! We are so thrilled to hear that you are loving EUK 134 0.1%, and appreciate you for taking the time to write this review. Thanks so much! 

🙊❤By MM on 26 December 2017
Let me preface this by saying that I absolutely LOVE T/O. This is my favorite beauty company by leaps and bounds. I own 10 of their products. I'm a 19 year old guy with a history of acne. I took acutane 4 years ago so I no longer have any acne but my main concerns are dryness, redness, and "ruddy skin" as well as age prevention. My typical routine is a hydrating cleanser on a gentle clarisonic brush head followed by hyaluronic acid, caffeine on my eyes, niacinimide (i've heard it also helps with redness), then EUK 134, marula oil, and moisturizer. I also use alpha lipoic acid three times a week. I look past the mild temporary redness because this product does help produce a glow and I know it protects the skin. My biggest issue is some sort of pilling issue? I have read other reviews that claim it is "balled up skin" but upon testing the serum on the back of my hand I have decided this isn't the case as I had no problems. I want to continue using this product but it's uncomfortable and I feel like it's just stripping away all of my skincare into little clumps. Any suggestions? Thanks for breaking the mold in the cosmetics industry marketing and bringing us such fantastic products!

DECIEM Response:
Hi there! Thank you so much for these lovely words and your kind support ❤ It sounds like you may be applying too much product! About 2-3 drops of each should be applied and all product should be fully absorbed before applying next steps in your routine. You may also wish to apply HA 2% + B5 to damp skin to improve absorption and the ease of application if desired. We recommend avoiding unprotected solar exposure, gradually incorporating one new product into your regimen at a time and applying test patches first to see what works best for your skin. We hope this helps! 

🐒❤By MAL on 18 December 2017
I love this stuff! I have seborrheic dermatitis so my skin is in a constant state of peeling. This serum has done a fantastic job of helping keep my peeling to a minimum. From my experience, keeping my skin condition in mind, it does have a warming effect - not burning - and it balls up the excess dead skin on my face. The first week or two that I used this I did have to follow it up with a dry wash cloth to remove the balled up skin before my moisturizer. But between this serum and the niamicide my skin has never had a better texture or feel to it. Would very highly recommend this serum!

DECIEM Response:
Hi Merry! We are so happy to hear that you are loving EUK 134 0.1% and appreciate you for taking the time to write this review. Thanks so much! 

🐒❤By EB on 16 December 2017
To be fair, I just started the use of EUK (alternating with Resveratrol + Ferulic Acid). Still, I am very excited to continue using it. Thank for providing this product and education around it.

DECIEM Response:
This is so lovely ❤ Thank you for sharing your experience with us and taking the time to write this review-- we hope you love EUK 134! 

🐒❤By JG on 15 December 2017
Now that's a serum that actually works and shows visible changes right away! My skin has always been in okay conditions, not many breakouts or oils around, so the change wasn't too obvious at first. Though when EUK became a regular routine, I'm finally realizing how much better my skin looks with four hours of sleep! God bless you! Also, can I mix this with the Ordinary Serum Foundation? Is there an appropriate age group suitable for EUK?

DECIEM Response:
Hi Jen! EUK 134 doesn't have an intended age group, and can definitely be applied before the application of our Serum Foundation. We are happy to hear how much your are enjoying this product! 🐒❤

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