Here's why:
* Bleach lifts the natural pigment from your hair by opening the hair cuticle and oxidizing the melanin. This process inherently weakens the hair shaft, making it more prone to dryness, breakage, and split ends.
While other options might occur *along* with hair damage, the damage itself is the most consistent and probable outcome. For example:
* Hair color change is the *purpose* of bleaching, but not the *result* in terms of what the process *does* to the hair.
* Increased hair shine is *not* generally a result of bleaching. Bleached hair tends to be duller unless treated with conditioning products.
* Reduced hair volume is possible if the hair breakage is severe, but the initial volume may appear increased due to the cuticle being roughed up.
* Improved hair manageability is *highly unlikely.* Bleached hair tends to be harder to manage due to dryness and tangling.