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Product Comparison

Here's our complete breakdown comparing the ingredients, attributes, and more of The Ordinary Niacinamide 10% + Zinc 1% versus iUNIK Tea Tree Relief Serum .

Last updated on January 28, 2024. Published on February 20, 2021

Overview

What they are

These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe . They have a total of 4 ingredients in common

Cool Features

They both contain niacinamide

Suited For

They're both likely to be good for fighting acne, brightening skin, oily skin, reducing pores, scar healing and dark spots

Free From

They both do not contain any harsh alcohols, common allergens, fragrances, oils, parabens, silicones or sulfates

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.

Facial Treatment Canadian Brand Canada
Serum South Korean Brand South Korea

Facial Treatment

Facial treatments are specially designed to treat a skin concern. Acne treatments and anti-aging products are common examples of facial treatments.

Serum

Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.

Price

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Buy Niacinamide 10% + Zinc 1%

Starts at $6.00
Shop

Buy Tea Tree Relief Serum

Ingredient Info

Click any item below to learn more and view relevant ingredients.
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free

At a glance

Click on any of the items below to learn more

Notable Ingredients

Niacinamide

Benefits

Good For Oily Skin
Redness Reducing
Reduces Large Pores
Dark Spots
Scar Healing
Acne Fighting (2)
Brightening

Concerns

Irritating

Notable Ingredients

Niacinamide
Hyaluronic Acid

Benefits

Hydrating
Good For Oily Skin
Redness Reducing (7)
Reduces Irritation (4)
Reduces Large Pores
Anti-Aging
Dark Spots (3)
Scar Healing (2)
Acne Fighting
Brightening (2)
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Ingredients Side-by-side

Ingredients that are highlighted in purple are present in both products.

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Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

1
What it does: Skin Conditioning, Solvent
Community Rating: Loved

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water

The Ordinary Niacinamide 10% + Zinc 1% contains this as ingredient number 1.

iUNIK Tea Tree Relief Serum contains this as ingredient number 20.

2
What it does: Smoothing
Community Rating: Loved

Niacinamide has emerged as an all-star ingredient due to its many benefits.

It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.

Other benefits include smoothing wrinkles and minimizing redness.

The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.

When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.

Learn more about Niacinamide

The Ordinary Niacinamide 10% + Zinc 1% contains this as ingredient number 2.

iUNIK Tea Tree Relief Serum contains this as ingredient number 5.

3
What it does: Skin Conditioning, Solvent
Community Rating: Mixed

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.

This property also makes Pentylene Glycol a great texture enhancer. It can help thicken or emulsify a product. Emulsifiers help stabilize a product. It does this by preventing certain ingredients from separating.

Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.

Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.

Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.

Learn more about Pentylene Glycol

The Ordinary Niacinamide 10% + Zinc 1% contains this as ingredient number 3.

iUNIK Tea Tree Relief Serum contains this as ingredient number 30.

4
What it does: Emulsifying, Emulsion Stabilising, Gel Forming, Skin Conditioning
Community Rating: Disliked

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

Learn more about Xanthan Gum

The Ordinary Niacinamide 10% + Zinc 1% contains this as ingredient number 7.

iUNIK Tea Tree Relief Serum contains this as ingredient number 25.

Here's what our community thinks of the ingredients in these two products.

27% are loved or liked
18% have mixed ratings
45% are disliked or very disliked
9% have no rating yet
56% are loved or liked
16% have mixed ratings
3% are disliked or very disliked
25% have no rating yet

Usage

Here's some more info on how this product is used by our community.

When to use

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Reviews

Here's what our community thinks

The Ordinary Niacinamide 10% + Zinc 1% 11 ingredients

3.5 /5
from 121 reviews
Clover's Avatar'
Nov 14, 2023

Gotta give credit where credit is due
WOW… lot of people ganging up on this incredibly affordable/popular serum. I understand the criticisms, but personally I don’t believe the intensity is warranted. For so many people this was the...

Gotta give credit where credit is due
WOW… lot of people ganging up on this incredibly affordable/popular serum. I understand the criticisms, but personally I don’t believe the intensity is warranted. For so many people this was the start of their skincare journey; it certainly was mine! And because I had never used ingredients like niacinamide or zinc on my face before, of course I noticed an incredible improvement in regards to my acne and skin tone evenness. This is a good serum to start with. No, you don’t need 10% strength (2%-5% works well) and for some that 10% can be irritating. However most people can handle 10% just fine so it’s not something many need worry about. The formulation isn’t elegant and sometimes it gets frothy or pills when you try to rub this in— BUT this is $6! You can’t really beat The Ordinary’s prices, and for some people $6 is all they can afford to spend on skincare so this is a good affordable option.
If you already have effective products with niacinamide in your routine, you do not need to add this in because it won’t really do anything for you. But if you’re just washing your face with something like dish soap then of course this will make an incredible difference. You’ll probably move on from it eventually, but it’s an effective place to start. Wishing everyone the best on their skincare journey. <3

Like review
14 likes
AshN.'s Avatar'
Mar 19, 2024

(Tried Jan 2021) This was actually the product that made me realize that my skin does not mix with Niacinamide (especially at high concentrations because I can usually tolerate it at %4/less or when it isn't a primary ingredient). I...

(Tried Jan 2021) This was actually the product that made me realize that my skin does not mix with Niacinamide (especially at high concentrations because I can usually tolerate it at %4/less or when it isn't a primary ingredient). I tested it on my wrist and a small patch on my cheek to check, and I had hives in both areas. I wouldn't want to give this a poor rating solely on the account of my allergic reaction as I'm sure it works for many others.

Great Value
Broke Me Out
Irritating
No Scent
Butter's Avatar'
Dec 3, 2023

This irritated my skin really badly stinging, redness, burning, etc this is probably due to the unnecessarily high concentration of niacinamide. Many studies show you only really need between 2-5% of niacinamide to be effective...

This irritated my skin really badly stinging, redness, burning, etc this is probably due to the unnecessarily high concentration of niacinamide. Many studies show you only really need between 2-5% of niacinamide to be effective definitely not worth the risk if you have sensitive skin there's much better alternatives out there. It's good value for money but I still wouldn't recommend it.

Great Value
Irritating
Sticky
No Scent

iUNIK Tea Tree Relief Serum 32 ingredients

4.4 /5
from 22 reviews
Mamabuja's Avatar'
Dec 8, 2023

wasnt completely sure about the niacinamide it contains, especially since it doesnt include the percentage and didnt want to irritate my skin as im not sure how my skin is with niacinamide but its super calming and reduces my acne and FA...

wasnt completely sure about the niacinamide it contains, especially since it doesnt include the percentage and didnt want to irritate my skin as im not sure how my skin is with niacinamide but its super calming and reduces my acne and FA breakouts so i absolutely love this serum💞💞

Great Value
Hydrating
Light
Light Scent
Works Well
Ariiii444's Avatar'
Dec 9, 2023

It actually reduced my redness however it caused me a bunch of blackheads (it never happened before)Honestly I think my skin is very sensitive to a lot of extracts. Skin is different for everyone, it may not work for me but if your main...

It actually reduced my redness however it caused me a bunch of blackheads (it never happened before)Honestly I think my skin is very sensitive to a lot of extracts. Skin is different for everyone, it may not work for me but if your main problem is redness this serum is an essential so don’t be scared. Good luck :)

Light
Absorbs Well
miharom's Avatar'
Feb 20, 2024

I love it! I recommend it to people with acne oily prone skin. The tea tree slows down the excess sebum and reduces inflammation. I used to have so much acne but using this consistently has reduced and now as I’m writing this stopped it....

I love it! I recommend it to people with acne oily prone skin. The tea tree slows down the excess sebum and reduces inflammation. I used to have so much acne but using this consistently has reduced and now as I’m writing this stopped it. If there are pimples appearing it, they are not as big and heals faster. But make sure to use consistently as there’s no miracle. Great serum can’t go wrong! 5/5

If people are curious, I also have the IUNIK Centella gel which is a set with the serum and it’s perfect. Very lightweight. I think it’s good for all seasons (for some it might be a bit too lightweight for winters). I also noticed that some of my blemishes fading. I like both!

Great Value
Hydrating
Absorbs Well
Works Well

Alternatives

Our Dupe Finder has found 9 potential alternatives that have similar ingredients to The Ordinary Niacinamide 10% + Zinc 1%.

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Our Dupe Finder has found 3 potential alternatives that have similar ingredients to iUNIK Tea Tree Relief Serum.

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