Head to head
The Ordinary Azelaic Acid Suspension 10% vs The Ordinary Niacinamide 10% + Zinc 1%
Same comparison whichever way you searched it: The Ordinary Niacinamide 10% + Zinc 1% vs The Ordinary Azelaic Acid Suspension 10%.
The bottom lineThe Ordinary Niacinamide 10% + Zinc 1% does more across the board (it leads on hydration, barrier repair, anti-aging), while The Ordinary Azelaic Acid Suspension 10% is the simpler, more pared-back pick.
Reach for The Ordinary Niacinamide 10% + Zinc 1% if you want the actives; The Ordinary Azelaic Acid Suspension 10% if you want fewer ingredients doing less, gently.
Answer nine questions and the app picks between them for your skin.
Cost per use
€0.15 an applicationabout 150 uses from 30 ml
a usual amount, not a measured dose: 3-5 drops, about 0.2 ml; from €23 as read in September 2026 and a 30 ml pack.
how this is counted
About €0.15 an application, about 150 uses from 30 ml.
- a convention: no trial has measured a serum dose
- Measured or assumed: the rule, and the dose table
€0.04 an applicationabout 150 uses from 30 ml
a usual amount, not a measured dose: 3-5 drops, about 0.2 ml; from €6 as read in September 2026 and a 30 ml pack.
how this is counted
About €0.04 an application, about 150 uses from 30 ml.
- a convention: no trial has measured a serum dose
- Measured or assumed: the rule, and the dose table
Per application, The Ordinary Niacinamide 10% + Zinc 1% is the cheaper: €0.04 against €0.15.
Which should you pick?
Pick Azelaic Acid Suspension 10% if
- it is the one you can get most easily or already trust
Pick Niacinamide 10% + Zinc 1% if
- plump, lasting hydration is what you want
- your barrier feels stressed and needs the support
- you want the more affordable option
What each delivers
Side by side
| Azelaic Acid Suspension 10% | Niacinamide 10% + Zinc 1% | |
|---|---|---|
| Type | Serum | Serum |
| Key actives | Azelaic Acid, Isohexadecane, Vitamin E | Niacinamide 10%, Zinc PCA, Pentylene Glycol |
| Texture | A light, fast-absorbing texture that layers cleanly under the rest of your routine, with no greasy film. | A light, fast-absorbing texture that layers cleanly under the rest of your routine, with no greasy film. |
| Fragrance | None detected | None detected |
| Feeds Malassezia | 1 measured / none inferred | none measured / none inferred |
| Pregnancy | No flagged actives | No flagged actives |
| Ingredients | 17 listed | 11 listed |
| Price | ~€23 | ~€6 |
What's in one but not the other
The two labels share 6 of the 22 ingredients between them. The actives are where they part company.
What each one adds acts on The living epidermis, The stratum corneum for The Ordinary Azelaic Acid Suspension 10% and The living epidermis, Not established, The stratum corneum for The Ordinary Niacinamide 10% + Zinc 1%. That is the layer each is understood to act on, not how deep it travels.
Only in The Ordinary Azelaic Acid Suspension 10%
Both
nothing
Only in The Ordinary Niacinamide 10% + Zinc 1%
The Ordinary Niacinamide 10% + Zinc 1% is a different bottle only for: niacinamide, zinc pca, pentylene glycol. They share nothing.
Which keeps longer
a tube and one light-sensitive active: the packaging is doing work here.
where this comes from
The pack form is read off the packshot; the light-sensitive actives are the base's photostability rows, sourced on each glossary page; the period after opening (not printed) is read off the maker's page, never a reseller's. Catalogue checked September 2026.
a dropper bottle and nothing on this label that light breaks; the period after opening not read yet.
The Ordinary Niacinamide 10% + Zinc 1% is the one to keep if you use it slowly: a dropper bottle, nothing on this label that light breaks.
Where each label stops telling you the dose
Ingredients are listed in order of how much is inside, but only down to 1%. Below that the brand may list them in any order it likes, so the bottom of a label is a set, not a ranking. These two stop being a ranking in very different places.
The Ordinary Azelaic Acid Suspension 10%
ordered for its first 53%
- 1Aqua (Water)
- 2Isodecyl Neopentanoate
- 3Dimethicone
- 4Azelaic Acid
- 5Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer
- 6Dimethyl Isosorbide
- 7Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
- 8Polysilicone-11
- 9Isohexadecane
- 10Tocopherol
- 11Trisodium Ethylenediamine Disuccinate
- 12Isoceteth-20
- 13Polysorbate 60
- 14Triethanolamine
- 15Ethoxydiglycol
- 16Phenoxyethanol
- 17Chlorphenesin
8 of 17 sit below the line, marked by Tocopherol.
The Ordinary Niacinamide 10% + Zinc 1%
ordered for its first 55%
- 1Aqua (Water)
- 2Niacinamide
- 3Pentylene Glycol
- 4Zinc PCA
- 5Dimethyl Isosorbide
- 6Tamarindus Indica Seed Gum
- 7Xanthan Gum
- 8Isoceteth-20
- 9Ethoxydiglycol
- 10Phenoxyethanol
- 11Chlorphenesin
5 of 11 sit below the line, marked by Xanthan Gum.
Below the line is not too little to work: ceramides, retinoids and peptides all act far under a percent. It means the position stops carrying information. Where the line falls is inferred from the first ingredient whose whole job is done at a fraction of a percent, so it is a close read of the label rather than a number from the formula sheet.
The molecule doing the work
Better for…
- Dark spots & uneven toneEither works
- Fine lines & firmnessNiacinamide 10% + Zinc 1%
- Breakouts & congestionEither works
- Dryness & dehydrationNiacinamide 10% + Zinc 1%
Who each suits
- The Ordinary Azelaic Acid Suspension 10%
- combination, oily, normal · avoid with acne-prone skin, very dry skin (needing an occlusive) and very sensitive skin
- The Ordinary Niacinamide 10% + Zinc 1%
- dry, combination, oily, sensitive · avoid with very sensitive skin (at high strength)
The Ordinary Niacinamide 10% + Zinc 1% is the cheaper of the two (~€6 vs ~€23).
Ready to pick one?
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Common questions
Is The Ordinary Azelaic Acid Suspension 10% or The Ordinary Niacinamide 10% + Zinc 1% better for fine lines & firmness?
For fine lines & firmness, The Ordinary Niacinamide 10% + Zinc 1% is the stronger pick by our read of the two formulas. The Ordinary Niacinamide 10% + Zinc 1% does more across the board (it leads on hydration, barrier repair, anti-aging), while The Ordinary Azelaic Acid Suspension 10% is the simpler, more pared-back pick. Reach for The Ordinary Niacinamide 10% + Zinc 1% if you want the actives; The Ordinary Azelaic Acid Suspension 10% if you want fewer ingredients doing less, gently.
Which is cheaper, The Ordinary Azelaic Acid Suspension 10% or The Ordinary Niacinamide 10% + Zinc 1%?
The Ordinary Niacinamide 10% + Zinc 1% is the cheaper of the two (~€6 vs ~€23).
Can I use The Ordinary Azelaic Acid Suspension 10% and The Ordinary Niacinamide 10% + Zinc 1% together?
They are both serums, so you would normally pick one rather than layer both in the same step. You can keep both and alternate them (morning and night, or on different days) if you like variety, but you do not need two.
What the scene shows
The cross-section at the top of this page is not decoration and not a diagram of the skin in general: it places the molecules these two are sold on at the layer each is understood to act on. The Ordinary Azelaic Acid Suspension 10% is placed by Azelaic Acid (the living epidermis), Isohexadecane (the stratum corneum), Vitamin E (the stratum corneum). The Ordinary Niacinamide 10% + Zinc 1% is placed by Niacinamide (the living epidermis), Zinc PCA (not established), Pentylene Glycol (the stratum corneum). A layer is where an ingredient does its work, never how deep it travels, and never a claim about how well it works.
Compare it with…
54 duels are built for this serum, Celimax The Vita A Retinal Shot Tightening Booster and The Ordinary Hyaluronic Acid 2% + B5 (Original Formulation) among them: type a name, or pick one below.