Measurement of Skin Surface pH

Area of Science:

• Dermatology
• Biophysics

Background:

• The skin surface's acidic nature has been known for over a century, with pH measurements dating back to 1928.
• Numerous non-invasive techniques for assessing skin surface pH have been developed, enhancing our comprehension of skin physiology and pathology.

Purpose of the Study:

• To summarize factors influencing skin surface pH and its measurement.
• To review various skin surface pH measurement methods, focusing on the planar glass electrode.
• To provide practical guidelines for accurate skin surface pH measurement using the planar glass electrode.

Main Methods:

• Review of endogenous physiological, exogenous, and environmental factors affecting skin surface pH.
• Emphasis on the classic planar glass electrode method for skin surface pH measurement.
• Provision of practical guidance for adhering to measurement guidelines.

Main Results:

• Skin surface pH is influenced by a complex interplay of internal and external factors.
• The planar glass electrode method is a well-established technique for skin surface pH assessment.
• Controlling influencing factors is essential for obtaining reliable skin surface pH data.

Conclusions:

• Accurate skin surface pH measurement is vital for understanding skin conditions, particularly diseases.
• Adherence to standardized measurement protocols ensures the credibility of skin surface pH results.
• Further research and consistent application of measurement guidelines will advance dermatological understanding.