The best replacement for surfactant is emulsifier.

The best alternatives to surfactant are rated as following:
★★★★★  emulsifier
★★★  detergent
★★  adjuvant
★  crop oil
★  solvent
★  wetting agent
  artificial surfactant

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

Other search terms related to surfactant and their ratings are:
★★★★★ roundup
★★★ glyphosate
★ herbicide
★ 2 4 d
★ babies
2,4 d
You have in mind a companion for surfactant and it is not yet here? Propose!



Google Trends

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surfactant
emulsifier
detergent