Versus

REVOX B77 Help Anti Dark Spot Serum Versus Q + A Azelaic Acid Balancing Serum

Serum
Serum
Spanish Brand Spain
British Brand United Kingdom

Updated on April 08, 2025

Overview

What they are

These products are both vegan, cruelty-free, and reef safe serums. They have a total of 4 ingredients in common

Suited For

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

Free From

They both do not contain any oils, parabens, silicones or sulfates

What's Inside

They both contain fragrances

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

Benefits

Concerns

Ingredients Side-by-side

found in both products

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
Buffering, Masking

Azelaic acid is a naturally occurring acid derived from grains. This ingredient is effective in treating acne, rosacea, and other skin conditions.

It has been shown to reduce the growth of acne-causing bacteria and helps reduce inflammation. On top of that, it helps reduce the production of sebum and unclog pores.

Azelaic Acid also has antioxidant properties. Antioxidants protect our skin cells from free-radical damage.

One of the main benefits of azelaic acid is that it is gentle and well-tolerated by most people.

Fun fact: The lab-created form of azelaic acid is typically used within cosmetic products for its shelf-stability.

Learn more about Azelaic Acid
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
Preservative

Phenoxyethanol 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.

When to use

15 Routines
27% use in am
73% use in pm
73% use every day
97 Routines
38% use in am
62% use in pm
89% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

REVOX B77 Help Anti Dark Spot Serum 16 ingredients

Help Anti Dark Spot Serum hasn't been rated yet.
Rate it now

Q + A Azelaic Acid Balancing Serum 24 ingredients

2.8 /5
from 5 ratings
Doesn't Work (1) Drying (1) Great Value (1)
AnaRitaSantos's avatar

AnaRitaSantos

2 years ago
Review

Good & reliable azelaic acid product
I like this product because the formulation is effective and straightforward, it gets the job done without causing any irritation, it has no compatibility issues with other products , it feels right on the skin and it's affordable and easy to get if you live in europe. There are formulations I like a little bit better (Peach Slices) but they are way too Show more

CentellaAddict's avatar

CentellaAddict

1 year ago
Review

Did basically nothing
Saw no change in my acne or hyperpigmentation, I thought I was purging while using it but my acne only stopped once I stopped using this product, didn't deliver any of the benefits of azelaic acid