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The right pH level is everything

Soteri products are all about establishing the optimal pH. But what is pH and why is it so important to skin health?


pH (short for the power of hydrogen) is a scale used to specify the acidity or basicity (alkalinity) of a solution. But what does it actually mean for something to be acidic or basic? Here’s the short and scientific answer: acidic solutions have high concentrations of hydrogen ions and basic solutions have low concentrations of hydrogen ions. Acidic substances also tend to taste sour (e.g., lemon juice), and many basic substances tend to be slippery (e.g., soap).

The pH scale ranges from 1 to 14, with lower numbers being more acidic, higher numbers being more basic, and around 7 being neutral. Healthy skin’s pH is acidic, at pH ≈4.5-5.



optimal skin surface pH
 The pH scale ranges from 1 to 14


Why is it better for our skin to have a slightly acidic pH level? An acidic skin surface protects us against harmful microbes. Also, many critical skin enzymatic reactions have evolved to thrive in this acidic pH. So if our pH levels are disrupted, our skin defense, along with many crucial enzymatic reactions become compromised.


Skincare and pH 

Disruptions to our skin surface pH levels happen all the time and we’re usually unaware of them. Every time we hop in the shower, wash our hands, or even apply cosmetics, we challenge our skin and temporarily disrupt the pH balance. Healthy skin is relatively unaffected by these pH fluctuations. But when these disruptions are prolonged or repeated, our skin pH moves too far away from the optimal acidic pH and doesn’t have an opportunity to bounce back. And this can affect your skin health. 



Leave-on skincare products (lotions, creams, serums) stay on your skin for several hours and can cause a prolonged shift in skin surface pH. This is why using products with optimal pH (like Soteri) for your skin is critical, especially if you have dry or eczema-prone skin. Unfortunately, many current products on the market aren’t formulated at skin-optimal pH levels and those that are don’t always list pH values.


The Solution: Soteri Skin

Science has shown that maintaining the right skin surface pH levels (4-4.5) is key to healing and maintaining healthy skin. Soteri Skin sets and maintains this ideal pH level. At that level, your skin’s microflora and enzymatic reactions can function well, naturally leading to healthy, comfortable and beautiful skin. And in the end, that’s why we created Soteri Skin: so everyone—even those with sensitive skin or eczema—can love the skin they’re in.

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