What Is Skin pH and Why Does It Matter?
The pH scale measures how acidic or alkaline a substance is, ranging from 0 (highly acidic) to 14 (highly alkaline). Healthy skin typically has a slightly acidic pH of around 4.5 to 5.5, which helps maintain the skin barrier, prevent infections, and keep hydration intact. When the skin's pH becomes too alkaline, it can lead to dryness, irritation, and breakouts.
How Modern Skincare Impacts Skin pH
Many cleansers and soaps have a high pH, which can disrupt the skin's natural acidity. Over time, this can damage the skin barrier, making it more prone to sensitivity and acne. Dermatologists recommend using low pH cleansers (below 5.5) to maintain balance, especially for those with acne-prone or sensitive skin.
Best Low pH Skincare Products
A well-formulated low pH cleanser should not strip the skin of its natural oils. Look for hydrating ingredients like hyaluronic acid and ceramides. Some popular options include:
- CeraVe Hydrating Cleanser (pH ~5.5)
- Cosrx Low pH Good Morning Gel Cleanser (pH ~5.0)
How to Restore pH Balance Naturally
If your skin feels tight or irritated after washing, a pH-balancing toner can help restore equilibrium. Ingredients like aloe vera, witch hazel, and lactic acid gently bring the skin back to its ideal acidity level. DIY remedies, such as diluted apple cider vinegar (1:3 ratio with water), can also help—but patch test first.
Common Myths About Skin pH
Myth: "More acidic is always better."
Truth: While acidic pH is beneficial, going too low (below 4) can cause irritation. Stick to the 4.5-5.5 range for balanced skin.
Disclaimer: This article is for informational purposes only and is not a substitute for professional dermatological advice. Consult a doctor before making changes to your skincare routine. This content was generated by an AI assistant based on expert skincare knowledge.