However, reports in the literature suggest that the pH of skin is lower, more on the order of 4. This review discusses the meaning of pH and how it is measured on human skin; which processes regulate the natural skin surface pH; and what processes are regulated by natural skin pH. It then describes the importance of this acidic pH for normal skin homeostasis, what factors cause deviations from natural skin pH, and finally discusses the implications of a pH lower than the generally assumed level of 5. Most individuals will have come across pH for the first time during their secondary education, learning that it was the - 10 log of the concentration of hydrogen ions in an aqueous solution. The value of K w was the product of the concentrations of the two ions; i.
Skin Surface pH in Acne Vulgaris: Insights from an Observational Study and Review of the Literature
Formulating at pH How Lower pH Benefits the Skin and Formulations
To help shed light on this, we turned to Rachel Nazarian, M. Nazarian: The pH scale is a numeric scale typically between 0 and 14 that measures how acidic or [neutral] something is. The skin, like every organ in the body, performs its best within a narrow ideal environment, especially when it comes to pH. Skin maintains its barrier best around 5. At the ideal pH 5.
Why the pH Balance of Your Skin-Care Products Matters So Much
It is not only mandatory that the pH of the cosmetic products remain in a certain range to guarantee consumers' safety, it is essential in product stability, and most importantly, in natural cosmetics it is essential for the performance of the preservative system you are using. One exception is the good old soap Fatty acid or triglyceride bases soap. The one you make by saponifying oils with lye and letting it to cure which by nature has a much higher pH around This makes the natural soap a little bit controversial. Soap lovers and admirers use it despite the fact that it kicks the pH of their skin out of balance.
Try out PMC Labs and tell us what you think. Learn More. This study aims to assess in subjects with and without acne, the skin surface pH, a parameter that cumulatively represents functioning of various units of skin, including the barrier.