What is a common outcome of an improper decolorization process?

An improper decolorization process often leads to uneven color as a common outcome. During decolorization, the goal is to remove the natural pigment from the hair uniformly to achieve a lighter shade. If the process is not done correctly—whether due to inadequate processing time, incorrect product application, or temperature variations—the hair can end up with patches of varying levels of pigment. This results in sections of hair being lighter or darker than others, leading to an unbalanced and splotchy coloration that is visually undesirable.

The other potential outcomes, such as rough texture, excess shine, or stronger hair, may not directly correlate with improper decolorization. Rough texture may be related to damage caused by other chemical processes, while excess shine typically indicates a healthy, well-conditioned hair surface. Stronger hair is usually a result of proper care and maintenance rather than a direct effect of the decolorization process itself. Thus, uneven color is the primary concern when decolorization is not executed correctly.