First, let’s understand what hair bleaching is.
Bleaching is a chemical hair dye technique that strips off the natural color of your hair through a process of oxidization, disrupting the cuticles to allow hydrogen peroxide, a key component of hair bleach, to penetrate the shaft. Bleaching increases porosity so that the new color can be absorbed. The truth is bleaching can make your hair brittle and prone to damage if done poorly, hence it is always recommended to leave your new style in the hands of a professional, so you don’t end up with an overly-processed hair. Other ways your hair could get severely damaged are perming and using heat-styling tools.
How bad can hair get from bleaching?
Hair dying does not inhibit hair growth, but it can cause hair loss by weakening the hair shafts. Permanent and semi-permanent hair coloring products contain peroxide and ammonia, the chemical components responsible for making hair dying possible by opening up the hair cuticles — this change in the hair integrity is what makes colored hair become dry and brittle.
Disaster can come if your strands get over-bleached. The wrong amount of bleach and developer, as well as leaving it in the hair for too long, can quickly make hair extremely fragile and stringy, and even burn your scalp. In the worst-case scenario, a person can experience losing chunks of hair (yes, chunks!) at the slightest touch right after the bleaching is done; this can be even more noticeable when brushing the hair or while manipulating it in the shower.