What effect can hydrogen peroxide have when used alone on the hair?

Using hydrogen peroxide alone on the hair typically results in a mild lightening effect on the natural color. This is due to its oxidative properties, which allow it to react with the melanin in the hair, leading to a gradual lightening process. Since hydrogen peroxide is often employed in lower concentrations when used alone, the level of damage to the hair is minimized compared to more aggressive bleaching agents.

This mild approach is often preferred for clients who seek subtle highlights or gradual color changes without undergoing extensive chemical processing. It’s important to note that while significant lightening can occur with repeated applications or higher concentrations, using hydrogen peroxide alone generally allows for a gentler treatment that maintains more of the hair's integrity.