The pH of baby skin changes over time, starting near neutral and becoming slightly acidic.
Initially, a newborn's skin has a neutral pH of roughly 7.0. This gradually lowers to a slightly acidic pH of 5.5. This shift to an acidic environment is crucial for the development of the acid mantle, which serves as a protective barrier for the skin.
Why is the Acid Mantle Important?
The acid mantle, created by the slightly acidic pH, provides several benefits:
- Protection against harmful germs: The acidic environment inhibits the growth of bacteria and other harmful microorganisms.
- Moisture retention: It helps the skin retain moisture, preventing dryness.
- Barrier against irritants: The acid mantle acts as a shield, preventing irritants from penetrating the skin.
Summary
| Stage | pH | Significance |
|---|---|---|
| Newborn | ~7.0 | Neutral |
| Later Stage | ~5.5 | Slightly acidic; Forms the acid mantle for protection and moisture retention. |
