What is a potential side effect of overusing hair color?

Overusing hair color can lead to hair breakage, which is primarily due to the chemical processes involved in hair coloring. Hair dye often contains harsh ingredients, such as ammonia and peroxide, which can strip the hair of its natural moisture and protective oils. This can weaken the hair structure, making it brittle and prone to breaking.

In contrast, the other options do not accurately represent the effects of excessive hair coloring. Dandruff is often related to scalp health rather than the direct effects of hair color. Increased shine may occur with certain types of hair treatments, but overuse of color typically results in dull, lifeless hair due to damage. Faster hair growth is generally influenced by genetic and health factors and is not a direct side effect of hair coloring practices. Therefore, hair breakage is the most relevant and concerning side effect of overusing hair color.