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The Ordinary Cheatsheet

The Ordinary Cheatsheet- aka frequently asked questions and tips on how to put your routine together.

How to Use The Ordinary skincare by Deciem pinnable graphic
How to Use The Ordinary skincare by Deciem

I’m a moderator for a very busy chatroom- The Deciem Chatroom on Facebook. There are always many posts on a daily basis and they vary a lot. Some people are showing off their glowing after photos, some asking technical questions about combining products  and a lot of confused beginners wondering where to start. Deciem has really ignited a passion for affordable skincare in the hearts of the masses, but they’ve also created a lot of unanswered questions.

The way that Deciem sell The Ordinary- i.e. One active per product has a tendency to confuse. It means rather than grabbing a one size fits all serum, you have to become your own skincare detective and figure out how to get all the actives you need into a regimen that works for your skin. The Ordinary requires you to do your homework. As a result on the Chatroom there are some questions that keep cropping up. I’ll go through these questions and give the best answers I can. I’m Nia, I’ll be your guide, please note I’m not a dermatologist, just a knowledgeable aesthetician who spends a large percentage of her waking life thinking about, using and writing about The Ordinary.

Here are some important points before you scroll-

  1. USE A GOOD SUNSCREEN. You must use sunscreen, especially if you’re using acids and retinoids. I recommend Altruist Face Fluid spf 50 ++++.
  2. It’s a good idea to patch test new products on a hidden area of skin, like behind the ear or on the leg, to check for allergy.
  3. I have a couple of other posts that are great for beginners-  a personalised regimen generator, sample regimens for different skin types, this is also worth a read before a Deciem shop. For support, come and find me at my skincare chatroom.

The Ordinary Cheatsheet- All Your Questions Answered!

  1. I’ve heard about The Ordinary and I don’t know where to begin, it’s all sciencey. How do I get into it? Chances are you already have some sort of skincare routine, cleansing and moisturising maybe. You can start off with The Ordinary by either just picking one thing to start off with or devising a whole regimen. There are sample regimens on Deciem.com, try my regimen generator or you can email Deciem for a personalised routine. No matter which way you begin with The Ordinary, it’s important to start off by using one thing at a time. So it’ll be very easy to see how your skin reacts to each ingredient. The Ordinary has high concentrations of actives so it’s possible that you will get a reaction. Treat these acids and Retinoids with anything less than measured caution and you’ll run into problems, red itchy problems. There is a lot of information available online so it helps to do a bit of research first, so you don’t waste any money on something that’s not right for you.
    How to Use The Ordinary skincare by Deciem- dropper bottles on a fur rug
    How to Use The Ordinary skincare by Deciem

    A lot of people write out their regimens or print out a spreadsheet to keep things organised. Labelling the bottles with a permanent marker also makes it easier to know what goes where- those dropper bottles can all blur into one first thing in the morning.

  2. I’ve got more than one skin concern, how do I choose a regimen?– Take a good look at yourself, what are you trying to achieve with your skincare. When you have both acne and aging or pigmentation and dry skin (or all of the above for that matter), how does one go about choosing a regimen? Luckily, a lot of The Ordinary products have more than one function. E.g. Azeleic Acid targets acne, but also has skin brightening effects. Retinol and Retinoids are like a silver bullet for skin- normalising the skin and acting on aging, pigmentation and blemishes.
    How to Use The Ordinary skincare by Deciem- dropper bottles and a notebook
    How to Use The Ordinary skincare by Deciem

    For example- I have acne, pigmentation, aging and congestion. I use the ‘persistent acne regimen’ from Deciem knowing the Salicylic will decongest my pores, the niacinamide will ease my oiliness and the Retinol will help with wrinkles and pigmentation. If you have sensitive or reactive skin, tread carefully when choosing your regimen- start off with the sensitive or dry regimen before carefully adding in any actives that target other issues.

  3. I’ve got my regimen, how do I add this new thing?– Assuming you have slowly introduced your regimen and you have been using it for a few months and your skin is happy, you can try adding something new. The rule of thumb is only three serums and only one strong active at a time according to The Ordinary. If your existing regimen includes, say, Azeleic Acid you wouldn’t use Retinol or Vitamin C 30% at the same time. You should use the strong actives on alternate nights.
    The products go on in order of texture- thin and watery to thick and oily. Apply your water based products in order of preference- so if you’re trying to tackle stubborn pigmentation, Alpha Arbutin should go before Buffet. Always patch test new products and introduce slowly.
  4. Should Retinol or Retinoid go over water based products? Brandon advises applying Retinoids over water based serums, as light oil formulations penetrate into the skin better than water. The Retinoid will still absorb through the water serums. You should wait until they are fully absorbed and your skin feels dry before applying the Retinoid.
  5. Which Retinoid product should I choose? The Ordinary has come out with several new Retin formulas recently. They will be discontinuing 1% Retinol in silicone as it has a history of causing irritation. Granactive Retinoid 5% is Brandon’s recommended retinoid for all skin types. It  has a good concentration of Hydroxypinacolone Retinoate and is not likely to cause irritation, whereas the Retinol formulas will likely cause redness and peeling. You might want to start with a lower concentration of Retinoid if you have sensitive or eczema prone skin, but you can still use it. Work up through the strengths of the retinoids in this order- start with Granactive Retinoid 2%, then 5%, Retinol 0.2%, 0.5%, then finally 1%. Move up through the strengths gradually over the course of months/years. You know it’s time to switch up your retinoid when your skin is calm and non irritating and your results have plateaued. Full retinoid guide is here.
  6. Which Vitamin C product should I choose?– I’ve written a full guide on Vitamin C which explains this in full. The derivatives (ascorbyl tetraisopalmitate, ascorbyl glucoside, ethylated ascorbic acid and magnesium ascorbyl phosphate) are milder that pure vitamin C (Ascorbic Acid), they have less side effects and have fewer conflicts. Pure vitamin C will give quicker results but can cause irritation, a worsening of acne and blackheads. If your skin can tolerate pure vitamin C, that will produce the best results.
  7. I’ve had a reaction to something, what do I do? It’s happened to the best of us, don’t panic. Step away from the vials. The Ordinary does some meaty concentrations of powerful actives, it’s easy to overdo it in the excitement of working towards perfect skin.
    How to Use The Ordinary skincare by Deciem lots of dropper bottles
    How to Use The Ordinary skincare by Deciem

    If you overdo it, you’re going to hold your progress back.
    The warning signs include- tightness, dryness, redness, irritation and an increase in acne. These are your face’s way of telling you to scale back, it’s likely that you have disturbed your skin’s protective barrier. Regain some control by taking a complete break from actives- no acids or Retinoids. Concentrate instead on restoring your skin’s lipid and acid protective barrier. Stick to low pH and oil cleansers, only rinse with tepid water. Use products that will strengthen your lipid barrier- Natural Moisturising Factors is particularly good for that. Wait until your skin is back to normal by a good margin before you gently reintroduce actives.

  8. These things are pilling, how do I stop this? A complaint I often see I the Chatroom is that some of The Ordinary products tend to pill. Pilling is when, after the products dry down and you’re trying to apply foundation or sunscreen, little balls of dry products roll up. It’s not nice and it can ruin your makeup. It particularly seems to happen with products containing Hyaluronic Acid and Silicone.
    How to Use The Ordinary skincare by Deciem drops of serum in the palm
    How to Use The Ordinary skincare- the right amount of serum for the whole face

    The key is to use fewer products, 3 max, and use less of each.  Three drops of any serum is enough for the whole face. Rub the drops between the palms and pat into the skin, give plenty of time for things to absorb. I find using a facial mist between layers really helps with pilling. If your skincare starts to pill, stop applying and moisten your palms with water or hydrating toner and pat to redissolve the product, then simply wait for reabsorption without touching your skin.

  9. I have been using my The Ordinary regimen for a while and it doesn’t seem to work anymore, in fact my skin is really bad now. What’s happened?– There could be a few things at work here. You could be overdoing it, there is such a thing as over exfoliation. If you’re using a few acids, a retinoid, the weekly acid peel and a cleansing brush, your poor face doesn’t stand a chance. Overdoing it can cause open pores, increased oiliness, acne, shiny taut skin and worsening fine lines. Pay attention to what your skin is telling you and scale back. It could also be a specific ingredient that is worsening your skin, you’ll have to do your detective work to figure out which one. Niacinamide is a trigger for lots of people’s acne, others report Hyaluronic Acid and the Advanced Retinoid as causes for their flare ups. If you have an inkling that it might be a specific product then cut it right out and see if things get better.The other cause of worsening skin is Purging. Purging occurs when acids or retinoids temporarily worsen acne (for 4-8 weeks). Purging is the worsening of acne in the area that acne normally occurs- so it doesn’t happen all over the shop. If you come out in spots in places that you don’t normally, it’s probably an ingredient that doesn’t agree with you and it won’t be temporary. It’s a matter of trial and error, but it’s fantastic when things start to go right.
    Is The Ordinary causing purging? Flowchart
    Is The Ordinary causing purging?
  10. I have pretty good skin but I want to use something as a preventative measureThis should be an easy one, but when you’re faced with the myriad of choice available from The Ordinary, it’s tricky to decipher what is what. You want a moisturiser? There’s nothing called “moisturiser”, you want an anti aging serum- they are so many products that target different signs of aging, how does one choose. The first thing you need is sunscreen, The Ordinary have an SPF called Mineral UV Filters (link to my review) but it’s very white, I recommend Altruist Face Fluid, it’s lovely. Then you should have an antioxidant to prevent environmental damage- EUK 134 is Brandon’s recommendation. You may wish to include a moisturiser, like Natural Moisturising Factors, Hyaluronic Acid or a plant oil. The message is don’t fall into the trap of over ordering when you don’t need to just because things are affordable. If your skin is working fine, there’s no need to upset the apple cart.
  11. I have Rosacea, I don’t see a regimen, what should I use? NIOD SDSM mist am and pm helps reduce redness, The Ordinary Azeleic Acid helps with inflammation and Granactive Retinoid 2% normalises the skin, both to be used in the PM only. This is Brandon’s recommended regimen. You can also try a vitamin C product, this will help strengthen blood vessels and reduce redness.
  12. What The Ordinary regimen is best for Melasma? *New post all about The Ordinary regimens for Melasma* Pigmentation is very difficult to treat. Anything you try will take a long time to work, and make sure you’re using a broad spectrum sunscreen every day so that you’re not undoing your hard work. Your regimen could include Alpha Arbutin (this requires some patience, it can take many months to show any effect), you may use this twice daily; Ascorbyl Tetraisopalmitate 20% has some studies showing effectiveness, this can be used in the morning under sunscreen; Azeleic Acid 10% then in the evenings alternated with a Retinoid. NIOD has just released an anti pigmentation product called Re:pigment, I’ve just started using it and will report back in due course. (My review of Re Pigment is live!)
  13. Which Antioxidant should I buy? The Ordinary has brought out a couple of new antioxidant serums in addition to the Vitamin C preparations. Vitamin C is a moderate antioxidant which also has a role in supporting collagen and brightens skin tone. Vitamin C can exacerbate acne, so might be one to avoid if you suffer with spots. There is also now Reservatol 3% + Ferulic Acid 3% , Pycnogenol and EUK 134 0.1%. The EUK 134 is the antioxidant that Brandon Truaxe himself recommends as it has the power to regenerate itself. Reservatol + Ferulic is a powerful antioxidant that can be used twice daily and increases the effects of Vitamin C and E. Antioxidants bond to free radicals in the skin that cause skin damage and speed up the aging process, so they’re a great addition to an anti aging skincare regime for any age. Reservatol + Ferulic and Pycnogenol are a handy addition to an Ordinary collection as it can be mixed with acidic serums and vitamin C.
  14. The Ordinary website says EUK 134 and acids don’t mix, can I use it with acid at all? EUK 134 cannot be used with the direct acids, pure Vitamin C, Ethylated Ascorbic Acid, Copper Peptides or Resveratrol. This is quite limiting for sure. It’s still a fantastic product, it is an antioxidant that regenerates itself, which means it can keep hoovering up those skin damaging free radicals in a more efficient way than other antioxidants. You can still use it with the hydrating products (HA, Marine Hyaluronics, Amino Acids, NMF and the oils), the other peptides apart from Buffet plus copper, the vitamin C derivatives and the retinoids. If you want to use EUK-134 and acids, you will have to use it in the morning and the acids in the evening.
  15. Buffet plus Copper Peptides has so many conflicts, how can I fit it into my routine? Buffet plus Copper Peptides can’t be used with the direct acids (glycolic, lactic, salicylic, azaleic, Mandelic), pure vitamin C, Ethylated Ascorbic Acid, EUK-134, Resveratrol + Ferulic, Pycnogenol, Granactive Retinoid or Retinol. It can be used with the vitamin C derivatives (Ascorbyl Tetraisopalmitate, Ascorbyl Glucoside and Magnesium Ascorbyl Phosphate), Niacinamide, the hydrators (HA, Marine Hyaluronics and Amino Acids, NMF) and the oils. You could use Buffet plus Copper in the morning with a Vit C dervative or niacinamide and a moisturising product, and put your acids and or retinol in the evening. It’ll take a bit of brain work.
  16. The conflicts are very confusing, how do I keep my regimen safe and in order? The conflicts are confusing for the best of us and Deciem keeps making things harder. As of 2021, The Ordinary conflicts have just got more and more difficult to understand. The trickiest products are Buffet plus Copper and EUK-134. Also Niacinamide cannot be used with pure Vitamin C. Deciem have conflict page on their site to help you navigate which product goes with which, this is the most reliable place to get information.
  17. Can I use The Ordinary long term, will it cause skin damage? No, there’s nothing to suggest that using acids long term will cause harm or thinning of the skin, so that’s good news. I’ve written about the downsides and upsides of using acids and Retinoids previously. The bad news is that The Ordinary is a gateway drug.
  18. The Ordinary doesn’t have some products, like an eye serum, how do I put together a complete regimen? Deciem has a few brands- NIOD and Hylamide particularly, that do some wonderful products that can help you complete your routine. NIOD is Deciem’s most expensive line, it’s focus is long term skin health- healthy skin is beautiful skin after all. If you’re paying a fiver and getting actual visible skincare results, imagine what Deciem can do with 50 pounds. NIOD has a fantastic hydrating mist called SDSM, a sunscreen called Survival 30 and some wonderful face masks.Hylamide is the mid range line by Deciem. There are some really lovely products. Sub Q Eyes is a staple eye product that I have reorders many times. Hylamide High Efficiency Cleanser is beautiful and Sub Q Skin is a beautiful hydrating peptide serum.
How to Use The Ordinary skincare by Deciem
How to Use The Ordinary skincare by Deciem

The Ordinary is a fantastic skincare resource, making ingredients with proven effectiveness at decent concentrations available to the masses without a hefty price tag. The key message is to not get overexcited by the wealth of affordable choice- do your homework first and choose a small selection of key ingredients. And use sunscreen. Check out Deciem.com for more information. My last tip would be to become a member of The Deciem chatroom Facebook group. There you’ll find a wealth of information. Head over to the Chatroom to read what Brandon Truaxe says about his own skincare regime and read all his advice (there’s loads, he was answering questions for days, what a legend!).

My other The Ordinary relevant posts that you might find useful- Melasma, Vitamin C guide, Retinoids, Cleansers, More About Cleansing, The Basics of Skincare, Sunscreen and Before and After pics. This post is not sponsored or paid for by anyone. Some of the links are affiliate, if you would like to say thanks and help support my blog if you click on a link and spend, I will receive a small percentage which goes towards keeping my blog going.

27 thoughts on “The Ordinary Cheatsheet

  1. What a fab post! I’ve only really dipped my toe into the waters of The Ordinary, and I agree that it can all get very confusing. I’m finding that I’ve picked up separate products when actually there is one that will cover all of their features. It’s a fab, affordable brand, but homework is definitely required! x

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  3. I’m 47 years old. I have dry skin and my main area of concern is wrinkled and eye bags. I want to start using the ordinary products. Can you recommend a skincare regime for me please

    1. Check out the Ordinary Chatroom on Facebook. There’s loads of resources there for regimens, you can post your pics and get really good advice.
      Best to start out by finding a good sun protection and making sure your cleanser is gentle. Then think about hydration before introducing actives.

  4. Hi Nia,

    That has been an incredible post!!
    I’ve been using TO since February and am absolutely happy and becoming a huge fan.
    I’m facing since December acne prone skin and at Deciems shop it was recommended to use Niacinamide (which after 3 months of use kept appearing new acne pimples on my face and I quit the use), Salicylic Acid which has worked wonders, Buffet and Squalane and NMF which I alternate or mix together.
    My skin feels a lot better, however I still have the marks of the acne and was wondering if I can introduce L-Ascorbic Acid Powder and Granactive Retinoid 2% What are your thoughts on this additions and how would you recommend to add to my routine – which ones can be mixed and which ones better not mixing?

    1. Hi! Lots of people have had acne after Niacinamide, it’s really common.
      Retinoid and Vit C powder are great additions. Use the Retinoid at night, it’s really gentle but best to start slow to begin with. You can use the Vit C in the am, maybe mixed with the NMF or Resveratrol if you have it xx

  5. hi
    I have bought retino Retinol 1%, Natural Moisturizing Factors + HA, salicylic acid and niacinamide. I want to know how to make a skin care routine. I have acne prone skin, combination skin. I also have acne scars.

  6. Hello! I bought Azelaic Acid suspension, Niacinamide 10%, Salicilyc Acid solution 2%, Lactic acid 5% and magnesium ascorbyl. I know I should not mix the magnesium and Niacinamide, but what about the others? can I mix them with either magnesium and niacinamide?
    I’ve read your guide before but I must admit i’m a bit scared.

  7. Where do oils fit in in the regime and the retinoid and acid recommended for rosecea to be alternated or should you try one?m

  8. I would love some feedback on how I’m mixing my products for morning and night skincare routines. I’m 31 and still get some pimples at that time of the month and have oily/combo skin. One of my concerns if preventing aging and dealing with uneven skin tone. I just bought some a few more products from The Ordinary to add or sub into my routine, but I’m not entirely sure where or when to add or what I should cut.
    The Ordinary Niacinamide 10% + Zinc PCA 1%. (AM, just wondering if I can use with my essence?)
    The Ordinary Granactive Retinoid 2% in Squalane (PM, but how might this work with the HA in the Buffet Serum)
    The Ordinary Lactic Acid 5% + Hyaluronic Acid 2% (PM, but wait 30 minutes between this and the retinoid?)

    AM
    foaming cleanser (TonyMoly Floria Brightening Foam Cleanser)
    Toner (Rosewater)
    Essence (Cosrx Galactomyces 95 Whitening Power Essence)
    Moisturizer with SPF (Cerave spf 30)

    PM
    Oil-based cleanser (I use The Face Shop’s Rice Water Bright oil-based cleanser)
    Foaming cleanser (Pacific Cactus Milk)
    Toner (Rosewater Toner from Burts Bees)
    Acid (Corxs BHA Blackhead Power Liquid)
    Buffet Serum from The Ordinary
    Neutrogena Hydro Boost Water Gel Moisturizer

    I also use The Ordinary Caffeine Solution under my eyes both AM and PM.

    TIA!

    1. The niacinamide could go after the essence in the morning, alternate the acid and retinoid in the evening. use the retinoid before moisturiser. There would be no issue with the retinoid and HA, thats fine x

  9. Can you mix anything at all with the EUK134? Acids are out, but water based formulas are out as well (such as the Ascorbyl Glucoside Solution 12%) since any water based solutions are going to affect antioxidants negatively (as stated on their site). So the only possible mixing partner with EUK 134 are oils?

    1. Acids are out, for sure but you are absolutely allowed to mix Euk-134 with water based products, on the skin and in the hand just before applying. You can’t store EUK in water as it would degrade but on the skin its fine, it’ll absorb into the cells very quickly and after all the skin is high in water. I use min alongside niacinamide before moisturiser

  10. What is your skin care regimen using the ordinary products. Mine concerns are acne congestion aging and uneven skin tone enlarged pores

  11. Hi! I currently use the Buffet and Hyaluronic Acid by The Ordinary together AM and PM and the lactic acid nightly peel every night afterwards. Is this alright? I also bought the multipeptide serum and was wondering where to incorporate this.

    1. Hi! that’s fine make sure you also use a moisturiser to seal the hydration in and spf of course. Multi peptide serum is for your hair growth to apply to clean scalp once daily

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