The Ordinary Niacinamide Reviews & FAQ’s

1 Sold Every 3 Seconds

  • This is the BEST selling product from The Ordinary with 1 being sold every 3 seconds (according to Deciem).
  • Niacinamide targets: visible shine, signs of congestion, textural irregularities, dullness & dryness
  • 84% of the Deciem Addicts love it
  • 78% say Niacinamide has improved their skin
  • 80% of the Deciem Addicts will repurchase
The Ordinary Niacinamide Reviews

The Ordinary Niacinamide – The Best-Selling Product

  • What is The Ordinary Niacinamide and what does it do?
  • When and how do I use The Ordinary Niacinamide?
  • Niacinamide conflicts
  • How to patch test The Ordinary Niacinamide
  • The Ordinary Niacinamide is foamy – is this normal?
  • What is the PAO of Niacinamide?
  • Unboxing The Ordinary Niacinamide Serum
  • Reviews of Niacinamide
  • FAQs
  • Available in 30ml & 60ml. Check prices here

What is The Ordinary Niacinamide and what does it do?

  • regulates sebum
  • minimizes pores

Deciem´s simple explanation: Niacinamide, also known as Vitamin B3, is a high-strength vitamin and mineral formula that helps to support barrier function while reducing the appearance of visible shine and signs of congestion.

This ingredient has also been shown to have a brightening effect on the skin, making it a truly multifunctional ingredient that can be easily incorporated into any routine. We have included Niacinamide at a high 10% concentration within this formula. ⁣⁣⁣Additionally, this formula includes a 1% concentration of Zinc PCA, which works to support the skin’s function as a protective barrier. ⁣

Unboxing The Ordinary Niacinamide 10%

See the product, colour & consistency before you buy. This product was purchased directly from Deciem.

Does The Ordinary Niacinamide work?

78% of the Deciem Addicts say Niacinamide has improved their skin.

Niacinamide Reviews

Niacinamide Targets

  • Brightens skin
  • Regulates Sebum
  • Minimizes Pores
  • Signs of congestion
  • Support the skin’s function as a protective barrier

How and when do I use Niacinamide?

  • You can use Niacinamide in the morning and evening.
  • Avoid the eye area.
  • Niacinamide is a water-based product. Apply this directly after cleansing or after other water-based products.
  • You can read all about layering The Ordinary here.

Niacinamide Conflicts

The Ordinary recommends avoiding using Niacinamide in the same routine as their vitamin c products.

  • Up until November 2020, Niacinamide serum only conflicted with direct vitamin c products (Ethylated Ascorbic Acid & L-Ascorbic Acid).
  • November 2020, Deciem suggested avoiding all vitamin c products including the derivatives with Niacinamide.

This is what Deciem said in November 2020 regarding Niacinamide and derivatives.

We do not recommend combining Vitamin C (L-Ascorbic Acid, Ethylated L-Ascorbic Acid, or Vitamin C Derivatives) with Niacinamide with Direct or Ethylated Vitamin C and Vitamin C Derivatives due to the formation of a salt complex that has the potential to reduce the integrity of both compounds.

If you wish to combine both products into a regimen, we recommend using them on alternate days and/or nights. 

What is the PAO of Niacinamide?

The period after opening Niacinamide is 12 months.

The Ordinary Niacinamide is foamy – is it normal?

This is one of the most common questions about Niacinamide. If you apply too much, it can be soapy. Apply smaller amounts at a time and make sure your skin is cleansed well with no residue left on your skin.

How to patch test The Ordinary Niacinamide

There is a guide on how to patch-test The Ordinary skincare products.

The Ordinary Niacinamide Reviews

There are some amazing before and after photos in the Facebook Group. You can read more reviews by the #deciemaddicts here on Instagram.

Jen @jamjarskingeek Niacinamide is my absolute favourite product from The Ordinary. It’s a multi-purpose gem that supports my skin barrier, helps with pigmentation, and keeps my oily skin in check. I wouldn’t be without it and love the new large size


Niacinamide has changed my life.

Niacinamide has really helped. Less redness and balanced sebum production.

Love Niacinamide. It has been great for my rosacea.

Niacinamide 💯 best thing I´ve ever used.

My skin has gone from ‘dry’ to ‘normal’ even with prescription-strength Retin A. It’s helped to keep my skin moisturized. I’m obsessed with this product and I use it night and day.

I’ve been using The Ordinary’s Niacinamide for 2 yrs now. My skin loves it. I have oily skin prone to breakouts, and this makes my skin look amazing.

Niacinamide has tightened my pores and helped with blemishes.

Photos of Niacinamide

I purchased this product directly from Deciem. Always buy from Deciem or one of the many authorised stockists around the world to avoid counterfeit products.

The Ordinary Niacinamide

Niacinamide FAQs

These questions have been asked and answered by The Ordinary on their social media.

Can I use Niacinamide around the eyes? Niacinamide is not formulated for the eye area.

Is it ok to use The Ordinary Lactic Acid 10% on top of Niacinamide? Yes, you can apply Lactic Acid before Niacinamide.

Can Niacinamide be used with AHA/BHA products? After rinsing off the AHA 30% + BHA 2% Peeling Solution, you may apply Niacinamide.

Is it possible to break out with Niacinamide 10%? Purging is possible with any products that affect the skin’s behaviour.

Can I use The Ordinary Alpha Arbutin, Niacinamide and Retinol in the same routine? Yes, you may. We recommend applying water-based solutions first, followed by anhydrous or oil formulations, and finally cream/suspension formulas.

What would come first? The Ordinary Niacinamide or Mandelic Acid? You may apply The Ordinary Mandelic Acid 10% + HA first.

Can I use Niacinamide + Alpha Arbutin + Glycolic Acid 7% Toning Solution + AHA and BHA peeling solution in the same routine? Which ones are essential for blemishes and dark spots? Niacinamide and Alpha Arbutin are great products to target your concerns. You may use your products in the same routine. We do not suggest using both AHA + BHA Peeling Solution and Glycolic Acid in the same routine.

More FAQS about Niacinamide

Which Deciem products would you recommend for oily and acne-prone skin? We suggest the use of The Ordinary Niacinamide 10% + Zinc 1%. This is a high-strength vitamin and mineral formula that visibly targets the look of blemishes and signs of congestion. 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.

I have The Ordinary Hyaluronic Acid, Niacinamide, and Buffet+Copper. What order should I apply these? Buffet + Copper Peptides > Hyaluronic Acid > Niacinamide.

Can we use The Ordinary Niacinamide with Alpha Arbutin?. Yes, you may! We suggest using the Alpha Arbutin first.

Is The Ordinary Niacinamide ok for sensitive skin? This solution is suitable for all skin types.

Would I apply Niacinamide before or after The Ordinary Buffet?  You may wish to apply The Ordinary Niacinamide 10% + Zinc 1% after The Ordinary “Buffet”.

Is it possible for Niacinamide to lighten pigmentation from acne scars? Niacinamide has some brightening properties which may help with hyperpigmentation.

More FAQs about Niacinamide

Some of these FAQs are old and may give contradicting advice as per the conflicts.

Is there anything we should avoid layering with Niacinamide? Niacinamide cannot be used alongside L-Ascorbic Acid, and Ethylated Ascorbic Acid as Niacinamide can affect the integrity of these forms of Vitamin C.

Is this the best vitamin B product you have to complement a skincare routine with vitamin A and C use? I’m using Retin-A and a vitamin C serum. It is difficult for us to comment on the pairing of our products with those of other brands and/or prescription medications. We recommend consulting with your doctor/dermatologist, gradually incorporating one new product into your regimen at a time, and applying test patches first to see what works best for your skin.

Can Niacinamide be combined with Vitamin C in the morning and glycolic acid or retinoids in the evening? Niacinamide is safe to use alongside Glycolic Acid and/or Retinoids. It should only be used with Vitamin C derivatives.

Can I use The Ordinary Mandelic Acid with Niacinamide? Niacinamide may be used with Mandelic Acid.

Final Thoughts on Niacinamide


The Ordinary´s Niacinamide was voted the best product out of all The Ordinary products in the Facebook Group. It is also The Ordinary´s bestselling product according to Nicola Kilner, CEO of Deciem. 84% of the Deciem Addicts love it. 78% of the Deciem Addicts say it has improved their skin, and 80% will be repurchasing it.

The Ordinary Niacinamide Fakes – How to spot a fake Niacinamide

There are counterfeit products and Niacinamide seems to be one of the common ones. The best advice I can give you is to buy through Deciem or one of their authorized stockists.

If you are shipping to a country with free shipping over 250$ shipping, I would recommend getting a few friends together and making a large order. Avoid Shopee, Amazon, and Ebay.

Read all about The Ordinary fakes here.

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