The best replacement for hydroquinone is kojic acid.

The best alternatives to hydroquinone are rated as following:
★★★★★  kojic acid
★★★  retinol
★★  arbutin
★★  retin a first
★★  lemon juice
★★  tretinoin cream
★★  tretinoin
★  kojic acid cream
★  retin-a
★  retin a
★  azelaic acid
★  alpha arbutin
★  glycolic acid
  monobenzone
  lytera
  niacinamide
  sepiwhite
  kojic
  clinique dark spot corrector
  meladerm
  mederma

Your alternative for hydroquinone is not listed? Suggest!
Speaking about hydroquinone, one probably shouldn't forget about tretinoin.

Other search terms related to hydroquinone and their ratings are:
★★★★★ tretinoin
★★★★ retin a
★★★★ retinol
★★★★ glycolic acid
★★ kojic acid
★ aha
★ tretinoin cream
benzoyl peroxide
tazorac
You have in mind a companion for hydroquinone and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of hydroquinone in all years. Click on graph for more.
hydroquinone
kojic acid
retinol