What effect do high alkaline shampoos have on hair?

High alkaline shampoos are formulated with a higher pH level, typically above 7, making them more alkaline than neutral shampoos. This increased alkalinity can affect the hair structure by raising the cuticle, the outermost protective layer of the hair shaft. When the cuticle is raised, it can no longer effectively lock in moisture, leading to a loss of hydration. This results in hair that feels dry and brittle.

Additionally, the raised cuticle allows for more moisture and nutrients to escape, further contributing to porosity. Porous hair is more susceptible to damage and can become frizzy or unmanageable. The harshness of high alkaline shampoos is why they can have a detrimental impact on hair, causing it to appear and feel unhealthy over time.

In contrast, moisturizing and nourishing hair care products, vibrant color enhancements, and promoting hair growth generally hinge on a more balanced pH, often leaning towards slightly acidic formulations, which help to maintain the integrity of the hair and promote overall health.