Which hair color category includes products that are more alkaline than no-lift deposit-only colors?

The category of hair color known as permanent color includes products that have a higher alkalinity compared to no-lift deposit-only colors. This alkalinity is crucial because it helps to open the hair cuticle, allowing the color molecules to penetrate deeper into the hair shaft. By doing so, permanent color can create long-lasting results, as it alters the natural pigmentation of the hair.

Permanent hair color typically contains ammonia or other alkaline substances that raise the pH level, facilitating the lifting and deposit of color. This is essential for achieving more significant changes in hue, covering gray hair efficiently, and producing vibrant, rich tones that can withstand multiple washes over time.

In contrast, demi-permanent colors are less alkaline and designed to deposit color without significant lifting, making them suitable for enhancing natural color or adding gloss. Temporary colors often wash out quickly and do not penetrate the hair shaft, focusing primarily on surface-level color application. Natural color categories refer to shades that mimic a natural hair color without involving chemical processing.