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What is Low pH and Why should you use a low pH cleanser?

I'm writing today's blog to answer customers' inquiries. Our customers ask often "What is low pH and why is low pH good for skin?", though Low pH is the widely dispersed word among K-beauty lovers.

Before answering the questions, you have to know about pH Levels.


<The pH Scale>

Look at this graph. pH 7 is neutral such as water. Under pH 7 is acidic and over pH 7 is alkaline. 

But, in the skincare world, 'Low pH' doesn't mean strongly acidic, it means slightly acid between pH 5.5~6, similar to your skin's pH level. 


Maintaining pH 5.5~6 is indispensable work to keep your skin healthy because bacteria from outside that threats skin health is hard to be alive in a slightly acidic environment! 

Some cleansers and soap having powerful cleaning ability are alkalinities. Even if they can cleanse makeup or dirt on the skin perfectly, they could irritate and damage the skin barrier. Alkalinity can crush your skin's normal pH level (5.5~6) and it takes time to come back to the original pH level.
In a nutshell, the ideal skin has a pH 5.5 level, and to keep it healthy and prevent future breakouts, we need to use the slightly acidic cleanser, close to your real skin pH level. 



Low pH products in K-Beauty 


COSRX Low-pH Good Morning Gel Cleanser

This cleanser is formulated with botanical skin purifying ingredients, Low pH Good Morning Gel Cleanser works softly to make skin supple and clear. Dehydrated skin, sensitive skincare cleanser for all skin types, especially sensitive skin. 


SOME BY MI Snail Truecica Miracle Repair Low Ph Gel Cleanser

A mild and gentle cleanser with a low pH of 5.5. Snail mucin formulated in this cleanser helps to restore skin damage such as acne scars. 


HEIMISH All Clean Green Foam

Abundant and soft bubble containing Centella Asiatica rarely irritates skin and this pH 5.5 mild cleanser removes all skin waste and makeup residue gently. 


KLAIRS Rich Moist Foaming Cleanser

Rich Moist Foaming Cleanser is a Low pH cleanser so it not only cleanses skin waste but also balances water and oil in skin. You can feel smooth skin because this cleanser has the mild exfoliating ability designed for sensitive skin. 






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