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 dry skin and 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
About this product
About this product
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
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Alcohol Denat.
Antimicrobial
Propylene Glycol
Humectant
Panthenol
Skin Conditioning
Pentylene Glycol
Skin ConditioningDimethicone
Emollient
PEG-6 Caprylic/Capric Glycerides
EmulsifyingPPG-6-Decyltetradeceth-30
EmulsifyingGlyceryl Isostearate
Emollient
Madecassoside
Antioxidant
Sodium Hyaluronate
Humectant
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingDisodium EDTA
Hydrolyzed Hyaluronic Acid
Humectant
Caprylyl Glycol
EmollientCitric Acid
Buffering
Xanthan Gum
EmulsifyingButylene Glycol
Humectant
Tocopherol
Antioxidant
Phenoxyethanol
Preservative
Parfum
Masking
Water, Glycerin, Alcohol Denat., Propylene Glycol, Panthenol, Pentylene Glycol, Dimethicone, PEG-6 Caprylic/Capric Glycerides, PPG-6-Decyltetradeceth-30, Glyceryl Isostearate, Madecassoside, Sodium Hyaluronate, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Hydrolyzed Hyaluronic Acid, Caprylyl Glycol, Citric Acid, Xanthan Gum, Butylene Glycol, Tocopherol, Phenoxyethanol, Parfum
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 is found naturally in our skin and hair.
There are two forms of panthenol: D and L.
D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
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.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
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
Lightweight and super hydrating. I prefer this one over skinceutical’s hydrating b5
La Roche-Posay Hyalu B5 Face Serum with Hyaluronic Acid 22 ingredients
calming and non-irritant, doesnt trigger any redness, itchyness or burning sensation
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.
