Index / Allies of Skin / Azelaic and Kojic Advanced Clarifying Serum
Allies of Skin

Azelaic and Kojic Advanced Clarifying Serum.

Allies of Skin Azelaic and Kojic Advanced Clarifying Serum
Serums

About this product

A clarifying serum combining 10% azelaic acid and 1% kojic acid designed to reduce breakouts, fade hyperpigmentation, and treat acne-related marks.

Best for

Acne-prone skin
Serums

The Guru Index verdict

77%

Approved

Approved · 77%
4Reviewers
3Approved
0Mixed
1Skip

What the gurus are saying

Gurus praise this serum for delivering visible results on adult acne and post-breakout hyperpigmentation, with one reviewer reporting a dramatic reduction in forehead breakouts. The consensus highlights that it works as both a preventative and treatment. A consistent strength cited is its gentle, hydrating formula that doesn't irritate despite its active ingredients.
Synthesized from 4 expert reviews
Every take, in full

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Approved only Skip only Mixed only Hide sponsored
Approved
"If you have adult acne damaging your skin confidence, buy this. This formula will erase any hyperpigmentation from acne, dark spots, and blemish marks that take forever to fade, but also it actually stops those breakouts. This has probably been the most effective product I have ever used for suppressing adult acne breakouts. I get far fewer breakouts now. It's been super warm here and this is normally where I break out all over my forehead but I've had maybe three or four zits this year thanks to this. Previous years I would be on my hundredth zit by now. Genuinely, if you have adult acne, this is worth every last penny. And I say that as someone who is super cheap and would never buy a product if it didn't work as well as it did."
Top Pick: acne treatment serum
All 6 takes from Mad About Skin
Ultimate HYPERPIGMENTATION SHOWDOWN - Best Dark Sot Serum 2025
"This is probably best for people whose hyperpigmentation is triggered by breakouts, adult or teenage acne, and they want to get on top of those breakouts and fade any associated hyperpigmentation, scarring, or discoloration. This probably works the very best for me because my hyperpigmentation is triggered by my adult acne. It contains kojic acid, which really helps drive forward hyperpigmentation results, but it also contains azelaic acid which calms, soothes, and has acne fighting benefits too. This also has a potent blend of other brightening ingredients which they list all the percentages and ingredients on the front. Whilst this doesn't come with the cheapest price tag out there, this could be an absolute holy grail if you're somebody who's still breakout prone, sees that hyperpigmentation as a result of that acne and wants to get on top of it and fade any scarring. I do find a little goes a long way. I actually use this twice a day because it's so amazing, and one of these will last me two months. This is one of my personal favorites and great for people that are looking for a more even skin tone and also to combat any breakouts and skin congestion that they might have."
Truth About AZELAIC ACID - 5 Year Update (Wish I Knew This Before)
"This is a dream product. You can go in straight away using it twice a day. You don't need to build up to it because it's that gentle, but it really does pack a punch. It's got azelaic acid in derivative form, but it's also got kojic acid, which has been a fabulous over-the-counter pigment corrector. This doubles down on the benefits you're going to see. If you're somebody that wants super gentle but you also want extra hyperpigmentation and dark spot fighting from your serum, this is the one to go for. It's not the cheapest, but this is almost like a skincare routine in a bottle. When you see it as almost like a three or four in one, it's definitely worth the splurge. This is like azelaic acid derivative taken up like 20 notches to give you the very best outcomes whilst also keeping it super gentle. One of my all-time personal favorites and I don't think you can go wrong with this, especially if you're just starting out on your azelaic acid journey."
NO MORE RETINOIDS - Why Everyone It Turning Their Backs on Retinol (AND WHY IM NOT)
"This is hands down the best azelaic acid pairing to use alongside retinoids because the formula is going to help to minimize the risk of purging, breakouts, and sensitivity. A lot of people in the early stages of their retinoid experience something called purging where you get a lot of under the skin breakouts that then can turn into white heads, and that can put a lot of people off. Using something like this can really minimize that, reduce the heal time of any breakouts that you do get. And honestly, this is a little game changer when it comes to brightening the skin. I think this is the best azelaic acid to pair with your retinoid, but it might not be for everyone's budget."
KOJIC ACID - Ultimate Dark Spot Treatment ( Best Kojic Acid Serums )
"Within just a couple of weeks you'll start to see a more even skin tone minimizing the hyperpigmentation, it'll help control your acne and breakouts, and this for me is ding ding ding 10 out of 10 all the way."
2025 SKINCARE HALL OF FAME - All The 10/10 Skincare I Used This Year
"I'm someone who's 40 and also acne prone, and I think this is the first product I've ever used that I can genuinely say is specifically formulated for adult acne. You've got your azelaic acid, which minimizes acne causing bacteria, so it's just going to help everything in check. You've also got kojic acid, which is going to help lift any hyperpigmentation, dark spots, acne scarring. I feel as we age, it takes a lot longer for our blemishes to fade than maybe when we're in our teens. Don't let the hyperpigmentation hang around. This will treat it. You've also got so many other ingredients in here such as licorice root, which is great brightening agent that is really going to help suppress any breakouts. It's going to decongest the pores, but most importantly, it's going to help fade those acne marks and scars so much quicker. So if you're someone that's like me, in your 40s, in your 50s, whatever age, and still getting those persistent breakouts, there is one product out there that's genuinely designed for us. Not the cheapest product out there, but such a good product."
Greatest SKINCARE BRAND 2026 - 3 Brands That Changed It All
"If you have adult acne damaging your skin confidence, buy this. This formula will erase any hyperpigmentation from acne, dark spots, and blemish marks that take forever to fade, but also it actually stops those breakouts. This has probably been the most effective product I have ever used for suppressing adult acne breakouts. I get far fewer breakouts now. It's been super warm here and this is normally where I break out all over my forehead but I've had maybe three or four zits this year thanks to this. Previous years I would be on my hundredth zit by now. Genuinely, if you have adult acne, this is worth every last penny. And I say that as someone who is super cheap and would never buy a product if it didn't work as well as it did."
Approved
"This has 10% azelaic acid and 1% kojic acid. I find this to be very gentle and it's also very hydrating on the skin and I've never experienced irritation with this whatsoever."
Skip
"Azelaic Acid is meant to help with redness and pigmentation and overall clarity, and on paper, it makes sense to me. Now, I finished it. I didn't dislike it. I thought it was lovely, but I just can't say that I saw a shift either. And at this stage, if I'm going to keep something in rotation, I want to know what it's doing. So, for now, I'm not repurchasing."
Approved
"It has a bakuchiol complex and that's great for pigmentation and anti-aging, so tons of heavy hitters here. It also feels really nice on the skin, it's like a milky serum. You could use it once a day or twice a day. I usually say twice a day if you're dealing with lots of hyperpigmentation and your skin isn't particularly sensitive. For some people, AIC acid twice a day is going to be a little intense, and I would layer it in your routine where you normally put your serums. Yeah, huge fan of this."
You might also like

Similar products worth a look.

Other products the same gurus have weighed in on, plus more from this brand and category.

This week's top beauty news, in your inbox.

A weekly read of the takes worth catching up on: the raves, the splits, the ones the gurus won't shut up about. Free, no spam, unsubscribe whenever.

Subscribe to the digest