Hi there. Am afraid it would be a very brave or foolhardy person who can tell you when your marks will fade away! In addition to what you are currently using, i would think you could use a topical skin lightening agent eg Hydroquinone
or /& a scar reducing cream eg contractubex or Mebo (herbal varieties) creams. Ideally a dermatologist
should be consulted. Wishing you well..cheers!