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Fresh, cooling aromatherapy for bath or hot tub

Joint Therapy

Aromatherapy Bath Crystals · 32 oz

A magnesium-rich, spa-safe mineral soak — made for hot tubs, spas, jetted tubs, and baths.

Hot Tub SafeNo Oily ResidueDissolves CleanlyNo Artificial Coloring32 oz = Up to 8 SoaksMade in USA
$21.9932 oz · up to 8 soaks
About $2.75 per soak
  • Plant-based aromatherapy fragrance
  • Magnesium-rich Epsom and Dead Sea salt blend
  • Dissolves cleanly in hot tubs, spas, jetted tubs, and baths
  • No oily residue or artificial coloring
  • Up to 8 soaks per 32 oz bag
Ships free over $50
RX Therapy Bundle Complete the set — shop the RX Therapy Bundle From $129.99 →
Prefer fragrance-free? Try Native Aroma Free
Free shipping over $50 Money-back guarantee Made in the USA
Product details

Joint Therapy by Relax Spa & Bath combines the invigorating scent of citrus with magnesium-rich bath crystals, enhanced by essential vitamins and minerals to support joint and muscle health. The refreshing citrus aroma revitalizes your senses, while magnesium works to relax muscles, reduce inflammation, and soothe achy joints. Fortified with essential nutrients, this bath therapy helps your body recover faster, providing relief from soreness and stiffness. Whether after a workout or a long day, Joint Therapy promotes overall joint comfort and relaxation, leaving you feeling rejuvenated and refreshed after every soak.  Our 32oz bag of premium aromatherapy bath crystals provides up to 8 rejuvenating soaks, transforming your bath or hot tub into a soothing retreat again and again,

      The Relax difference

      Safe for your soak. Easy on your spa routine.

      Relax Spa & Bath crystals are designed for hot tubs, spas, jetted tubs, Jacuzzis, and baths. They dissolve cleanly, contain no artificial coloring, and leave no oily residue behind.

      Hot Tub Safe
      No Oily Residue
      Dissolves Quickly
      No Artificial Coloring
      Made in USA
      The scent

      The scent experience

      A magnesium-rich, spa-safe mineral soak with plant-based aromatherapy — designed to dissolve cleanly in hot tubs, spas, jetted tubs, and baths, with no oily residue.

      Best for
      Fresh routinesMorning soaksHot tub ownersClean spa scent
      How to use
      1 Measure about 4 oz (½ cup) of crystals.
      2 Add to warm bath or hot tub water.
      3 Let them dissolve, then soak and unwind.
      Why hot tub owners choose Relax Spa & Bath

      Ordinary bath products can contain oils, colorants, or additives that aren't ideal for spa systems. Relax Spa & Bath crystals are made to dissolve cleanly — without oily residue or artificial coloring.

      Relax Spa & Bath
      Hot tub safe
      No oily residue
      No artificial coloring
      Oils & bath bombs
      May leave residue
      May affect filters
      May discolor water
      What customers say

      Trusted in real hot tubs and baths

      Customer Reviews

      Based on 1 review
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      Phil D.
      Outstanding

      I’ve been using the Therapy salts for a long time now. They are excellent and I use them in my pool hot tub as they are safe to use. I highly recommend this product as each salt works as indicated. I highly recommend RELAX Therapy Bath Crystals.

      Good to know

      Questions, answered

      Everything you need to know before your first soak.

      Yes. Relax Spa & Bath crystals are designed for hot tubs, spas, jetted tubs, Jacuzzis, and baths. They dissolve cleanly and leave no oily residue. Always follow your spa manufacturer’s maintenance guidance.

      The crystals are designed to dissolve cleanly and leave no oily residue behind.

      Start with approximately 4 oz (½ cup) per bath or hot tub soak.

      A 32 oz bag provides up to 8 soaks, depending on how much you use.

      Yes — they’re made for jetted tubs, spas, Jacuzzis, hot tubs, and baths, and dissolve cleanly. Follow your equipment’s maintenance guidance.

      Try Native Aroma Free — a clean mineral soak with no added fragrance.

      Complete your ritual

      RX Therapy Bundle RX Therapy Bundle $129.99 De-Stress Therapy De-Stress Therapy $21.99