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Soft Soak® BiGuanide Hot Tub Sanitizer (Chlorine-Free)

Soft Soak® BiGuanide Hot Tub Sanitizer (Chlorine-Free)

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Soft Soak® Hot Tub BiGuanide Sanitizer is a non-chlorine, non-bromine hot tub sanitizer that completely inhibits bacterial growth without the smell or harsh effects of chlorine and bromine.

  • Polyhexamethylene biguanide hydrochloride (PHMB)
  • pH~7.5
  • Effective over wide pH range
  • Non-staining, non-corrosive
  • Kills and controls bacteria, using poly-biguanide
  • Gentle on eyes, skin and hair
  • Chlorine-free, Bromine-free hot tub sanitizer alternative


Soft Soak® Sanitizer is a biguanide sanitizer that does not dry your skin, or dissipate with the sun. This is an effective alternative to chlorine or bromine sanitizers. Testing is only needed once a week. No Chlorine or Bromine smell means a much more enjoyable experience without the need for a shower after every soak. INCOMPATIBLE WITH CHLORINE AND BROMINE.


Soft Soak Spa Sanitizer Dosage:

Always follow label instructions, dosages are provided here to inform your purchase decisions. These dosages are not meant as a replacement for label instructions.

Startup: 1 ounce per 150 gallons of water.

Maintenance: weekly testing to verify 50ppm of Soft Soak® Sanitizer is present.