|REVIEW| COSRX: BHA Blackhead Power Liquid + AHA 7 Whitehead Power Liquid

COSRX BHA Blackhead Power Liquid review

Welcome back for another COSRX review! We are jumping straight into acids today. If you haven't already, please follow me on Bloglovin' using the little black button on your right (that's → side) to stay updated for my upcoming reviews! If you want to know more about COSRX you can read the review on COSRX AHA BHA Clarifying Treatment Toner to brush up on your beauty knowledge. Don't forget to also check out my recent review on the COSRX One Step Pimple Clear Pad!

Today, we are going to talk about the Power Liquids of COSRX. I will do the AHA and BHA reviews side by side to help you make a more informed decision when buying acids.


My first thought: a cheaper alternative to Paula's Choice. Of course I'm in! Like the COSRX One Step Pimple Clear Pad, I got them for a discount. I have always wanted to test try acids so I did not hesitate when I found out COSRX carries them. Other than them being on sale, I bought them because I wanted to get rid of the persistent bumps around my chin. I've read again and again that acids can help reduce acnes because they exfoliate dead skin cells and impurities trapped inside our pores, which are the culprits behind acnes! What's better? You can apply and go to bed straight after without having to wash off! If you are here because you want to get rid of your whiteheads and blackheads, read on!

COSRX BHA Blackhead Power Liquid review
COSRX BHA Blackhead Power Liquid (RM72 for 100ML)

The clear liquid is runny and silky in texture. It can be a little oily when I first spread it across my skin. The oiliness will disappear if I pat sufficiently to assist absorption but can be rather uncomfortable if the weather is too hot. Sounds like a problem for us in Malaysia! Hence I tend to do it in an air-conditioned room to avoid this.

I sometimes forget and apply it before blow drying my long hair and I highly advise you against this. My hair keeps getting stuck on my face when I blow dry and it is really annoying. If you are planning on layering serum on it or even AHA 7 Whitehead Power Liquid*, I suggest you wait at least 20 minutes. This will let the BHA Blackhead Power Liquid sink in first so that the product later will get absorbed better. 

*CAUTION: COSRX does NOT recommend the use of its BHA Blackhead Power Liquid with other AHA, BHA, vitamin C or A products. They suggest using them on either alternative days or one in the morning and one at night if you want a faster effect. This is simply my personal preference in using the product and it does not represent COSRX. Even though I see excellent results myself, I'm not recommending this so please follow the instructions when using the products.

COSRX BHA Blackhead Power Liquid
Runny, runny

In terms of results, my face has become much smoother and it has this glow that lasts even when I'm deprived of sleep! I didn't buy this for my blackheads but it does not really remove the blackheads I have near the bridge of my nose. It may need more time but I've been using this for five months now, should've seen some results by now. 

However I do realise if I get the blackheads squeezed out by a professional aesthetician, they do not come back if I use the BHA consistently later. Which means it works better at preventing blackheads rather than removing formed ones! My chin area has also become much clearer and the recurring bumps have not returned as frequently as they did before.

In terms of smell, some said it smells like burnt tyres. Personally, I've not smelled a burnt tyre before but I would not say the smell is easily acceptable. It has a sweet scent that lingers when I apply onto my skin. If you are applying it to your whole face, you might need to tolerate with the smell for a minute or two as it slowly fades away.  Although it's not entirely an unpleasant smell, it did take me a day or two to get used to it. Therefore it may come across as a strong smell to some of you, so try to get a sample of this before you buy it!

COSRX AHA 7 Whitehead Power Liquid review
COSRX AHA 7 Whitehead Power Liquid (RM59 for 100ML)


Its clear solution has a runny texture similar to the BHA Blackhead Power Liquid. However, in the smell department, it is much sweeter. It is also not as oily and gets absorbed much better than the BHA Power Liquid. I don't have to pat as long to get it into my skin.

COSRX AHA 7 Whitehead Power Liquid review
Even runnier 

COSRX suggests beginning by using this once a week and make sure to not mix with any other acids or vitamin products. After your skin has adapted to it, you can then increase usage to 2-3 times a week. You should adjust the usage according to your skin condition to ensure your skin gets along well with it.

This is a stronger product which stung when I first tried it. Hence if you face any severe stimulation you should get it washed off immediately with lukewarm water. I took three weeks to get used to it before increasing usage to once a day. YES, I use this once a day after the BHA at night. This is, again, my personal preference which is NOT recommended by COSRX and I'm not recommending this. I do this because it didn't cause any severe stimulation to my skin and it works well with the BHA at keeping my face clear. 

I have a lot of random whiteheads near my lips and the side of my nose and I really hope this would miraculously remove them. Turns out I put my hopes too high. But I was happily surprised by its ability to prevent whiteheads, which is even better! Formation of whiteheads has reduced tremendously and I will go back to getting new ones if I skip for more than three days. As the saying goes, don't work in fits and starts. Be consistent in what you do and make sure you stick to your plan! I'm pretty sure this applies to skincare too. :3

Okay, so I found an even shorter ingredient list than that of the AHA BHA Clarifying Treatment Toner. The prize goes to: 

COSRX BHA Blackhead Power Liquid, which has only 11 ingredients!
Here is the ingredient list:
Salix Alba (Willow) Bark (BHA), Water, Butylene Glycol, Betaine Salicylate, Niacinamide, 1,2-Hexanediol, Arginine, Panthenol, Sodium Hyaluronate, Xanthan Gum, Ethyl Hexanediol
 Whereas the AHA 7 Whitehead Power Liquid has 12 ingredients
Pyrus Malus (Apple) Fruit Water (AHA), Butylene Glycol, Glycolic Acid (AHA), Water, Niacinamide (AHA), Sodium Hydroxide, 1,2-Hexanediol, Panthenol, Sodium Hyaluronate, Xanthan Gum, Ethyl Hexanediol
COSRX AHA 7 Whitehead Power Liquid review

I only use them at night after toning my face. I will always make sure to put on sunblock in the morning and if you plan to use this, promise me you will too! The BHA Blackhead Power Liquid contains 4% of Betaine Salicylate (BHA) while the AHA 7 Whitehead Power Liquid contains 7% of Glycolic Acid (AHA). This gives them the ability to exfoliate your skin chemically.

Once the top layer of dead skin is removed, your skin becomes more vulnerable to the UVA and UVB. This is because it was supposed to shield your skin from the evil sun rays! With them gone, sunspots will form more easily if you don't cover your face up with a sunscreen of SPF30 or greater. So, my lovely peeps, promise me you will use sunblock! 

Make sure to avoid getting them into or even near your eyes. It stings like hell.

This post contains affiliate links.

Where to get the COSRX Power Liquids:

If you want to buy from Hermo, they are having a sale to celebrate COSRX's 1-year-old birthday! Hermo is giving out special gifts to celebrate the #1stbirthdayevent for every purchase. If you buy over RM250 (excl. GST) you can even get a COSRX One Step Pimple Clear Pad for free!

If you want to buy from Wishtrend, keep in mind their friend-referral program! You can get a USD5 discount coupon if you use my invitation code 0515042401 upon registration. You will receive this voucher right after. There will be a specific field in your registration form called "Friends Invitation Program" where you can put in the code above. This way you can get USD5 off on your first purchase! What better way to save money?

If you are still on the fence, don't be shy and shoot me questions below. I like questions and comments (and subscribers)! Tell me if you would buy it!

By the way, you can use Shopback to save some money (save 2% for every purchase) when buying from Hermo. Just sign up using my link: https://www.shopback.my/hermo?raf=OxeI66, and you'll be rewarded with RM5 immediately, followed by RM5 when you make your first purchase on Hermo through Shopback. That's RM10 in total. It works in the form of cash back which you can cash out to your bank account. You'll can learn more on their website here.

*Follow me on Bloglovin' to get updated COSRX reviews when they are up!*

Thank you for reading, see you in the next post!

This post contains affiliate links. 
Which means, if you use my link, I can earn some commission. You don't have to use my link, but if you do, it would really help my blog!


  1. thanks for the lovely review. im considering to add actives in my skincare routine for awhile now

    1. You're welcome Ldynisa! Just try it and do update me on your experience with it! :)

  2. Hi YanRu, thanks for the genuine review. I have a lot of bumps on my face as well and I do not know how to remove them to have a clear skin. I bought the Cosrx AHA Whitehead treatment last month and there is still a lot of bumps on my skin. Can you recommend any useful products to clear bumps and blemish ? Thanks :D

    1. Hello Cheryl! What kind of bumps are you getting? Do you mind telling me more about them? Are they skin coloured or red bumps? Because if red bumps maybe you can try the centella blemish cream, I thought it is quite good for welts :) Let me know! :D

    2. Hi, thanks for the reply. They are those skin colored bumps. Does the centella blemish cream really work on blemishes and scars?

    3. Hi Cheryl, no problem. :D Skin coloured bumps may be due to products you use being too rich for your skin. However, I am no dermatologist so I'm just basing it on my past experience with my own skin. Usually I'll just wait for the bumps to subside because so far I haven't found a product that works on those (haven't tried enough products haha). But you said the bumps have been there for a month? Maybe try switching out some of your products to see which one is causing it and if any new ones come out when you don't use a certain product. If that doesn't work then maybe you'd need to see a doctor to get it sorted out.

      The blemish cream works great on red bumps that look like mosquito bites but are not mosquito bites, like those that arise due to pollution or a long day of makeup from my experience. I don't think it works well on blemishes, while for scars, I think it does accelerate the recovery maybe a little. But in the end it really depends on your skin. :) Some people think it works wonder. :D

    4. Oh, okay. Thank you so much on taking the time to reply me. <3

    5. No problem Cheryl, hope it helps! <3

  3. Oh and also, do you use the AHA whitehead treatment on your whole face or just troubled area ? Thanks :)

    1. I use it on my whole face. :) around two pumps every night.

  4. Hi YanRu, I just came across your blog and I'm pretty excited to try both products. But first. I've battled cystic acne for the past 6 months, my dermatologist has me on antibiotics and topicals but no luck still. Sometime last month, I came across the Korean regimen and gave it a shot. Even without the 10 steps, I think I did 5 or 6, but the cysts dried up immediately and started the dark spots left behind started fading. Unfortunately, I became lazy when I saw improvements and last week they all came back in full force. I mean both cheeks and entire jawline. So now I'm back to square one with cysts and black spots from dried out ones.
    My current regimen is 1) oil cleanse 2) water based cleanser 3)salicylic cleanser 4)toner 5) murad 2% salicylic serum 6) snail essence 7)aloe vera to moisturize 8) Spf

    What would you suggest to help clear the cysts and black spots left behind and prevent future breakouts? Btw, I'm not new to acids as I've done countless chemical peels and used aha/bha serums in the past.


    1. Hello Abi! May I know is there any change (lifestyle, diet, work) in the last 6 months? Since the antibiotics don't work it could either be triggered by the change or it could be related to hormonal issues. I had the same problem last year when I started work and everything went haywire. My hormone was good and I had sufficient sleep. But I was under too much stress that my skin couldn't take it. After the stress source was taken out, everything went back to normal. Maybe you can try looking into this area as well to see if this can solve your problem.

      Since your Korean regimen worked, I'd suggest just go back to it! Salicylic is really good for drying up acnes and I think the aloe vera + snail essence combination does a good job in fading your scars as well. Personally I use Vitamin C serum by C20 (no review by me yet, still in the midst of testing haha) for dark spots and so far I've seen good results. My complexion is much brighter (note: not whiten) and the stubborn acne scars left on my chin seem to fade much sooner than I thought. My skin also becomes more radiant which I'm really in love with. I'd actually recommend it since your skin is okay with actives. There could be a little burning sensation for the first 2-3 applications but it goes away after your skin gets used to it. But since you're also using a salicylic serum, make sure to check with your dermatologist whether those two (salicylic and vit c serums) are okay to be used together. Also also! I'm sure you must be familiar with this, wear SPF of at least 30 when you go under the sun. Vit C tends to make the skin more vulnerable to the evil rays.

      Btw, do you apply makeup, e.g. foundation / bb cream / concealer? It's best to avoid those to prevent bacteria spreading to your good spots through the makeup brushes.

      Sorry, I'm being a little long winded haha, I hope this helps! Just reply here or email me if you have further questions! x

    2. Thank you so much for taking the time to reply. My hormones have always been the culprit as this isnt my first experience with that so maybe I need to go see my ob/gyn. I'm certainly going to stick to my Korean regimen, I was just wondering if to switch

      to the Cosrx Bha since it contains 4% salicylic. I'll also give the Vit C a shot, I've been DIYing mine but willing to try something else.
      I must confess I'm not very religious with my spf so I need to change that habit too. And I wear makeup only on Sundays to church and occasionally Saturdays but not weekdays.


    3. Hello Abi! You're welcome. It's my pleasure!

      Since Murad's 2% works, I thought it's best not to use something stronger at the moment. I'd suggest you to switch only when 2% stops working for you as our skin may sometimes stop showing improvement after it has got used to a certain product.

      In that case, remember to clean your makeup brushes each time after using them. :)

  5. In that case I'll stick with my current products.



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