Yes, various peroxides are used as bleaches for their oxidative action.
no
no it does not
You can't remove bleach spots using a different bleach.
Bleach is Sodium Hypochlorite, Peroxide is Hydrogen Peroxide. The word 'Bleach' is used by many people to denote the mixture of Hydrogen Peroxide and Ammonia or Ammonia Compounds with thickeners, conditioners, bluing and other ingredients to to lighten the hair and the two compounds are not similar except that they are both strong oxidizers.
Chlorine bleach does not foam in the presence of blood. However, Hydrogen peroxide does. H2O2 is an oxidizer that can work as a bleach.
Peroxide was first used to bleach hair in 1860.
carbamide peroxide
Hydrogen Peroxide
no
no it does not
It certainly does.