Versus

The INKEY List Beta Hydroxy Acid (BHA) Serum Versus Numbuzin No.5 Vitamin Concentrated Serum

Serum
Serum
British Brand United Kingdom
Korean Brand South Korea

Updated on April 08, 2025

Overview

What they are

These products are both cruelty-free and reef safe serums. They have a total of 3 ingredients in common

Cool Features

They both contain hyaluronic acid

Suited For

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

Free From

They both do not contain any harsh alcohols, common allergens, 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

Click any item below to learn more and see relevant ingredients

What's inside (and what isn't)

What's inside (and what isn't)

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
No.5 Vitamin Concentrated Serum

Water

Skin Conditioning

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Niacinamide

Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin Icon

Panthenol

Skin Conditioning
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Scar Healing Icon

Tranexamic Acid

Astringent
Helps reduce irritation IconGood for Dark Spots IconGood for Scar Healing Icon

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.

When to use

253 Routines
32% use in am
69% use in pm
69% use every day
When to use See routines that use it ->
968 Routines
67% use in am
33% use in pm
88% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

The INKEY List Beta Hydroxy Acid (BHA) Serum 13 ingredients

4.3 /5
from 6 ratings
Absorbs Well (1) Light (1) Works Well (1)
featherstone's avatar

flora

6 months ago
Review

Game changer. This stuff is amazing for fungal acne, other BHA acids were too harsh for my sensitive skin and didn’t improve any of my concerns, but this stuff is strong and non irritating. Didn't give me any new breakouts just surfaced all of my pre-existing acne. Turned all my FA into white heads in a matter of weeks. This with the ordinary 5% lactic acid serum is completely reviving the texture Show more

#light
#absorbs well
#works well
CentellaAddict's avatar

CentellaAddict

1 year ago
Review

Very good for acne
Saw an immediate overnight change in my inflammation overnight after using for the first time, haven't had any inflammatory whiteheads since I finished purging (which lasted 2 weeks) and my skin is slightly less oily. However it did nothing really for my sebaceous filaments.

Numbuzin No.5 Vitamin Concentrated Serum 47 ingredients

3.4 /5
from 34 ratings
No Scent (14) Hydrating (13) Broke Me Out (12)
ThomasvV's avatar

Thomas VV

5 months ago
Review

This serum is one of the best all-round anti-oxidant and dark spot serums containing:
- vitamin c
- Glutathion!!
- 5% niacinamide
- Q10
- Alpha Arbutin
(Unfortunately they removed TXA)

Skin type: combi acne prone

This is not just a dark spot serum, its a perfect anti-oxidant serum in the morning. Glutathion is a killer ingredient and the concentration of Vit C is low.

My acne Show more

#great value
#hydrating
#absorbs well
#no scent
angel13's avatar

Angel

8 months ago
Review

they removed the tranexamic acid? this was the only thing that helped my skin dark spots and such, and i loved the vitamin c to…

#great value