Do you measure the pH of your cleanser?

Since word got out that anything with a high pH is terribly drying and irritating, everyone’s buying pH strips like they’re going out of business and testing every cleanser in their stash.

Wouldn’t it be easier if a cleanser told you straight what its pH is?! Cosrx Low pH Good Morning Gel Cleanser sort of does. It tells you it’s low, which is more than 99% of cleansers out there tell you anyway.

Put to the pH strip test, its pH turns out to be 5.5. It goes up to 6.5 when you mix it with water. Just right there in the right pH range then.

But does it have what it takes to remove all sorts of impurities from your skin? Let’s find out:

What’s In Cosrx Low pH Good Morning Gel Cleanser?


Don’t let their long, incomprehensible names fool you. Cocamidopropyl Betaine and Sodium Lauroyl Methyl Isethionate are two very gentle cleansing agents.

Scientists call them surfactants. They’re ingredients that help water mix oil and dirt so they can be easily rinsed away down the drain.

The two surfactants in Cosrx Low pH Good Morning Gel Cleanser are strong enough to remove impurities without stripping your skin bare of the precious natural oils it needs to stay moisturised.

Yet, they’re gentle enough not to dry out or irritate skin – even sensitive skin.


I’ll be brief. A quick look at the ingredient list shows that Cosrx Low pH Good Morning Cleanser is loaded with plant extracts and antioxidants.

Don’t pay any attention to them. All these goodies just end up down the drain together with dirt and grime.

When it comes to choosing a cleanser, it’s the surfactants and pH that really matter.

Struggling to put together a skincare routine that banishes shine, pimples, and blackheads? Download your FREE “Best Skincare Routine For Oily Skin” cheatsheet to get started (it features product recommendations + right application order):


Thick gel texture that foams a little when you mix it with water.


The scent isn’t the best. Fragrance-free, the cleanser takes its odour from the tea tree oil. It’s botanical, with a medicinal vibe to it. Sort of like something you’d smell in a hospital. At least it fades away super fast.

How To Use It

It’s the first step of your skincare routine, both morning and night.

Performance & Personal Opinion

Don’t let the lack of too much lather fool you. Cosrx Low pH Good Morning Gel Cleanser takes everything off – yes, waterproof mascara and water-resistant sunscreen included – in less than a minute!

The best part? It doesn’t leave a greasy residue behind. If you’re tired of double cleansing, you can just use this cleanser for morning and night and be done with it. No need for a second cleanse – unless you’re wearing more makeup than a Kardashian…

The cleanser didn’t leave my skin soft and moisturised. It’s a foaming cleanser so it doesn’t have any added oils to do the job.

But it didn’t leave it dry and tight either. It just… cleansed – without disrupting the skin’s protective barrier. In other words, it does what every good cleanser is supposed to do.

cosrx low ph good morning gel cleanser 01

Who Is This For?

  • Oily skin
  • Combination skin

Who Is This NOT For?

Dry skin.


A white, blue, and yellow tube. Not the fanciest, but it’s practical.

cosrx low ph good morning gel cleanser 02

Does Cosrx Low pH Good Morning Gel Cleanser Live Up To Its Claims?

Mild, yet effective
This gentle cleanser does not irritate the skin, but it definitely does its job in removing all impurities from the skin.
Low pH
Slightly acidic pH level helps maintain healthy skin by restoring the skin’s optimal pH level and protecting the skin from outer irritants.
Cleanses the skin without stripping feeling and leaves the skin refreshed, clean and glowy.
I wouldn’t say moisturising, but it doesn’t dry out skin.

Price & Availability

Available at: $12.00/£9.50 at Dermstore, Look Fantastic, SokoGlam, Ulta and Yes Style

Do You Need It?

If you’re looking for a gentle foaming cleanser, this is one of the best options to consider.

Dupes & Alternatives


Water, cocamidopropyl betaine, sodium lauroyl methyl isethionate, polysorbate 20, styrax japonicus branch/fruit/leaf extract, butylene glycol, saccharomyces ferment, cryptomeria japonica leaf extract, nelumbo nucifera leaf extract, pinus palustris leaf extract, ulmus davidiana root extract, oenothera biennis (evening primrose) flower extract, pueraria lobata root extract, melaleuca alternifolia (tea tree) leaf oil, allantoin, caprylyl glycol, ethylhexylglycerin, betaine salicylate, citric acid, ethyl hexanediol, 1,2-hexanediol, trisodium ethylenediamine disuccinate, sodium benzoate, disodium EDTA