The Ordinary Niacinamide 10% + Zinc 1% Versus iUNIK Tea Tree Relief Serum
Updated on March 04, 2025
Overview
What they are
These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe serums. 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, anti aging, dry skin, brightening skin, sensitive 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 needs an update? Let us know.
Ingredient Info
The Ordinary Niacinamide 10% + Zinc 1% 11 ingredients
iUNIK Tea Tree Relief Serum 32 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
The Ordinary Niacinamide 10% + Zinc 1% 11 ingredients
iUNIK Tea Tree Relief Serum 32 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Ingredients Side-by-side
Melaleuca Alternifolia Leaf Water
AntimicrobialCentella Asiatica Leaf Water
Skin Conditioning
Butylene Glycol
Humectant
1,2-Hexanediol
Skin Conditioning
Niacinamide
Smoothing
Glycereth-26
Humectant
Triticum Vulgare Sprout Extract
Skin ConditioningBrassica Oleracea Italica Extract
AstringentPortulaca Oleracea Extract
Skin Conditioning
Brassica Oleracea Capitata Leaf Extract
Skin ConditioningMedicago Sativa Extract
TonicRaphanus Sativus Seed Extract
Skin ConditioningBeta-Glucan
Skin Conditioning
Perilla Frutescens Leaf Extract
MaskingBrassica Campestris Extract
Skin ConditioningAspalathus Linearis Extract
Skin ConditioningCommiphora Myrrha Resin Extract
Skin ConditioningCentella Asiatica Extract
Cleansing
Glycyrrhiza Glabra Root Extract
Bleaching
Water
Skin ConditioningBetaine
Humectant
Allantoin
Skin Conditioning
Chlorophyllin-Copper Complex
Antioxidant
Cellulose Gum
Emulsion StabilisingXanthan Gum
EmulsifyingDipotassium Glycyrrhizate
Humectant
Adenosine
Skin Conditioning
Sodium Hyaluronate
Humectant
Glycerin
Humectant
Pentylene Glycol
Skin ConditioningCaprylyl Glycol
EmollientEthylhexylglycerin
Skin ConditioningMelaleuca Alternifolia Leaf Water, Centella Asiatica Leaf Water, Butylene Glycol, 1,2-Hexanediol, Niacinamide, Glycereth-26, Triticum Vulgare Sprout Extract, Brassica Oleracea Italica Extract, Portulaca Oleracea Extract, Brassica Oleracea Capitata Leaf Extract, Medicago Sativa Extract, Raphanus Sativus Seed Extract, Beta-Glucan, Perilla Frutescens Leaf Extract, Brassica Campestris Extract, Aspalathus Linearis Extract, Commiphora Myrrha Resin Extract, Centella Asiatica Extract, Glycyrrhiza Glabra Root Extract, Water, Betaine, Allantoin, Chlorophyllin-Copper Complex, Cellulose Gum, Xanthan Gum, Dipotassium Glycyrrhizate, Adenosine, Sodium Hyaluronate, Glycerin, Pentylene Glycol, Caprylyl Glycol, Ethylhexylglycerin
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterNiacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
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.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about NiacinamidePentylene 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 also help thicken or stabilize a product.
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 GlycolXanthan 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 GumIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
The Ordinary Niacinamide 10% + Zinc 1% 11 ingredients
iUNIK Tea Tree Relief Serum 32 ingredients
Reviews
Here's what our community thinks
The Ordinary Niacinamide 10% + Zinc 1% 11 ingredients
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 Show more
(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 Show more
iUNIK Tea Tree Relief Serum 32 ingredients
I love this product so so much!! Honestly, I thought the comments were kinda exaggerating but, oh my, was I wrong. This is such a good serum. The fact that it’s fungal acne safe and non comedogenic??? And it literally has the rating 100/100 for me so props to the app/site.
No, but now to the point. This literally calms down my face so so much. As someone that had a really broken skin barrier Show more
This serum is a must-have for oily skin! It's extremely effective, especially when used in the morning plus at night. I've noticed a big reduction in sebum production on my skin, as well as a slight effectiveness on redness and marks. However, it's not very effective on active blemishes, and mainly helps to limit their future appearance. On the plus side, it's quite moisturizing.
