Versus

Medik8 Hydr8 B5 Liquid Rehydration Serum Versus AlumierMD Ultimate Boost Serum

Serum
Serum
British Brand United Kingdom
Canadian Brand Canada

Updated on July 26, 2024

Overview

What they are

These products are both cruelty-free and reef safe serums. They have a total of 4 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 harsh alcohols, common allergens, fragrances, 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

Click any item below to learn more and see relevant ingredients

About this product

About this product

At a glance

Click on any of the items below to learn more

Benefits

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Ultimate Boost Serum

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning, Solvent

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 Water
Humectant, Skin Conditioning

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
Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.

Buffering, Masking

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 Acid

When to use

33 Routines
48% use in am
52% use in pm
94% use every day
When to use See routines that use it ->
1 Routine
0% use in am
100% use in pm
100% use every day

Reviews

Here's what our community thinks

Medik8 Hydr8 B5 Liquid Rehydration Serum 7 ingredients

3.0 /5
from 2 ratings
Absorbs Well (1) Expensive (1) Hydrating (1)
agnesdolff's avatar

Agnes Dolff

2 months ago
Review

Lightweight and super hydrating. I prefer this one over skinceutical’s hydrating b5 

#expensive
#hydrating
#light
#absorbs well

AlumierMD Ultimate Boost Serum 42 ingredients

Ultimate Boost Serum hasn't been rated yet.
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