Medik8 Hydr8 B5 Liquid Rehydration Serum Versus La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid
Updated on July 19, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 5 ingredients in common
Cool Features
They both contain hyaluronic acid
Suited For
They're both likely to be good for sensitive skin
Free From
They both do not contain any common allergens, oils, parabens 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
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients
La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid 22 ingredients
At a glance
Click on any of the items below to learn more
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients
La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid 22 ingredients
Benefits
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Notable Ingredients
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Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Concerns
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This product contains 1 ingredient that may have this attribute:
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Ingredients Side-by-side
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 WaterPanthenol is a common ingredient that helps hydrate and soothe the skin. It can be found naturally in our skin and hair.
This ingredient is also referred to as pro-vitamin B5 or dexpanthenol in dermatology.
Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
Learn more about PanthenolSodium 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 HyaluronatePhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent 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.
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
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 even out skin tone.
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.
Read more about some other popular AHA's here:
Learn more about Citric AcidIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients
La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid 22 ingredients
Reviews
Here's what our community thinks
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients
La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid 22 ingredients
GabriellaTsoukalas
LOVED IT
My dermatologist recommended me this product after finishing my acne treatment pills. I LOOOVEEEED IT. I bought the effaclar serum so I...
LOVED IT
My dermatologist recommended me this product after finishing my acne treatment pills. I LOOOVEEEED IT. I bought the effaclar serum so I stopped using it. (I was so into La roche posay!!). I would repurchased it again and use it on my night routine (still trying to figure out what to use). It's a bit expensive for me hihi.
sophia d
Have yet to find a serum that compares. So so so hydrating and amazing. It’s my holy grail and I’ve been using it for nearly 5 years. Amazing AM...
Have yet to find a serum that compares. So so so hydrating and amazing. It’s my holy grail and I’ve been using it for nearly 5 years. Amazing AM and PM hydration boost.