What is alkali in hair color?

Alkali in hair color refers to alkaline agents that help to open the hair cuticle, allowing color molecules to penetrate the hair shaft. Common alkaline substances used in hair dyes include ammonia and monoethanolamine (MEA). These agents raise the pH level of the hair, facilitating the dyeing process but can also lead to potential damage or dryness if used excessively. Balancing alkali levels is crucial for achieving desired color results while maintaining hair health.