pH is a term you often see in skincare products and wellness discussions. Understanding what pH means and why it matters can help you make informed choices.
What Is pH?
According to the U.S. Geological Survey, pH is a measure of how acidic or basic a substance is, on a scale from 0 to 14:
- 0-6: Acidic
- 7: Neutral
- 8-14: Basic (alkaline)
Your Skin's Natural pH
The American Academy of Dermatology notes that healthy skin is slightly acidic, with a pH around 4.5-5.5. This acid mantle helps:
- Protect against bacteria
- Maintain the skin barrier
- Keep skin hydrated
pH-Balanced Skincare
Research published in the National Library of Medicine suggests that using products close to skin's natural pH may help maintain skin health.
Water and pH
The EPA regulates drinking water pH between 6.5 and 8.5, which is considered safe for consumption.
Body pH Balance
The Merck Manual explains that the body tightly regulates blood pH between 7.35 and 7.45 through complex mechanisms.
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