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Product Comparison

Here's our complete breakdown comparing the ingredients, attributes, and more of La Roche-Posay 10% Pure Niacinamide Serum versus Medik8 Clarity Peptides .

Published on February 26, 2023

Overview

What they are

These products are both reef safe serums. They have a total of 11 ingredients in common

Cool Features

They both contain hyaluronic acid, niacinamide and Vitamin E

Suited For

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

Free From

They both do not contain any common allergens, parabens or sulfates

What's Inside

They both contain silicones

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

Serum French Brand France
Serum British Brand United Kingdom

Serum

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

Serum

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

Price

Shop

Buy 10% Pure Niacinamide Serum

Starts at $39.99
Shop

Buy Clarity Peptides

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

Vitamin E
Exfoliators
Niacinamide
Hyaluronic Acid

Benefits

Hydrating (2)
Good For Oily Skin
Redness Reducing
Reduces Large Pores
Anti-Aging
Dark Spots
Scar Healing
Acne Fighting
Brightening (3)

Concerns

Drying
May Worsen Oily Skin (3)
Acne Trigger (2)
Irritating (2)
Rosacea (2)
Eczema (3)

Notable Ingredients

Vitamin E
Niacinamide
Hyaluronic Acid
Peptides

Benefits

Hydrating
Good For Oily Skin
Redness Reducing
Reduces Large Pores
Dark Spots
Scar Healing
Acne Fighting (2)
Brightening (3)

Concerns

May Worsen Oily Skin (2)
Acne Trigger
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Ingredients Compared

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

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

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 1.

Medik8 Clarity Peptides contains this as ingredient number 1.

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

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 2.

Medik8 Clarity Peptides contains this as ingredient number 2.

3
What it does: Humectant, Skin Conditioning, Skin Protecting, Solvent
Community Rating: Loved

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 3.

Medik8 Clarity Peptides contains this as ingredient number 8.

4
What it does: Emollient, Skin Conditioning, Skin Protecting
Community Rating: Very Disliked

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

Dimethicone has been found increase absorption in skin, boosting the benefits of other ingredients. While there is concern for the safety of dimethicone, the levels used in skincare are safe for use.

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 6.

Medik8 Clarity Peptides contains this as ingredient number 6.

5
What it does: Humectant, Skin Conditioning
Community Rating: Loved

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.

Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.

These are some other common types of Hyaluronic Acid:

Learn more about Sodium Hyaluronate

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 15.

Medik8 Clarity Peptides contains this as ingredient number 25.

6
What it does:
Community Rating: Disliked

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 19.

Medik8 Clarity Peptides contains this as ingredient number 17.

7
What it does: Buffering, Masking
Community Rating: Disliked

Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).

If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.

As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and look more even.

Read more about some other popular AHA's here:

Learn more about Citric Acid

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 21.

Medik8 Clarity Peptides contains this as ingredient number 29.

8
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

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 22.

Medik8 Clarity Peptides contains this as ingredient number 18.

9
What it does: Emulsifying
Community Rating: Very Disliked

Polysorbate 80 is a surfactant and emulsifier. It is used to keep ingredients together, and prevent oils and waters from separating.

It is made from polyethoxylated sorbitan and oleic acid. This ingredient can be found in cosmetics, foods, and medicine. It is water-soluble.

Polysorbate 80 may not be fungal acne safe.

Learn more about Polysorbate 80

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 23.

Medik8 Clarity Peptides contains this as ingredient number 22.

10
What it does: Antioxidant, Masking, Skin Conditioning
Community Rating: Liked

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.

Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.

You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.

There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.

Learn more about Tocopherol

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 25.

Medik8 Clarity Peptides contains this as ingredient number 30.

11
What it does: Preservative
Community Rating: Very Disliked

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

La Roche-Posay 10% Pure Niacinamide Serum contains this as ingredient number 26.

Medik8 Clarity Peptides contains this as ingredient number 15.

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

28% are loved or liked
3% have mixed ratings
59% are disliked or very disliked
10% have no rating yet
36% are loved or liked
15% have mixed ratings
45% are disliked or very disliked
3% 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

La Roche-Posay 10% Pure Niacinamide Serum 29 ingredients

3.0 /5
from 3 ratings
Broke Me Out (1) Doesn't Work (1)
ewhw41's avatar

ewhw41

9 months ago · Combination Skin
Review

Always settles my skin down

AnastasiaW's avatar

AnastasiaW

5 months ago · Skin
Review

I applied a small amount to a dark spot. The next day I woke up with an inflamed cystic acne that just appeared out of nowhere. Looking at the...

I applied a small amount to a dark spot. The next day I woke up with an inflamed cystic acne that just appeared out of nowhere. Looking at the ingredients now I am not surprised. Very disappointing, why do they make formulas like this???

Medik8 Clarity Peptides 33 ingredients

Clarity Peptides hasn't been rated yet.
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