What is the typical pH range of shampoo?

The typical pH range of shampoo falls between 4.5 and 7.5. This range is important for maintaining the health of both hair and scalp. A pH level within this range ensures that the shampoo effectively cleanses without excessively stripping the hair of its natural oils or damaging the cuticle.

Shampoos that are too acidic, generally below a pH of 4.5, can lead to potential scalp irritation and make hair more prone to breakage, while those with a higher pH, above 7.5, could raise the cuticles of the hair and create frizz or damage, leading to dryness and a lack of moisture retention. Thus, a pH around 4.5 to 7.5 helps maintain the natural balance of the hair and scalp, ensuring it remains healthy and manageable. This range is particularly beneficial for everyday use as it aligns with the natural pH of skin, which is slightly acidic.