Bumble & bumble Mending Shampoo is an ultra-mild cleanser that begins treating damage without stripping colour, wilting perms or reverting chemically straightened hair. Who: The truly damaged (who regularly colour, straighten or perm). When: Whenever you wash, followed by Bumble & bumble Mending Conditioner or Masque. All Bumble & bumble products are: Cruelty free.