Dr. Brenner Honest Hyaluronic Acid Serum Versus Medik8 Hydr8 B5 Liquid Rehydration Serum
Updated on July 19, 2024
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 hyaluronic acid
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
Dr. Brenner Honest Hyaluronic Acid Serum 4 ingredients
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Dr. Brenner Honest Hyaluronic Acid Serum 4 ingredients
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients
Benefits
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 WaterCalcium Pantothenate is calcium salt from Vitamin B5. It can be naturally found in plants and animals.
Calcium Pantothenate is a potent antioxidant. Antioxidants help fight free-radical molecules. Free-radical molecules are capable of damaging our cells and other genetic material. Antioxidants help stabilize free-radicals by donating extra electrons. This may help reduce the signs of aging.
Our bodies use Calcium Pantothenate for various metabolic functinos. These functions include metabolizing carbohydrates, proteins, and fatty acids.
Learn more about Calcium PantothenateSodium 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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Dr. Brenner Honest Hyaluronic Acid Serum 4 ingredients
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients

Reviews
Here's what our community thinks
Dr. Brenner Honest Hyaluronic Acid Serum 4 ingredients
Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients
Lightweight and super hydrating. I prefer this one over skinceutical’s hydrating b5