• Formulating

  Bath Salts Stability

  Posted by chemjunnph on December 27, 2024 at 10:41 am

  Hello! I am new to the industry and am formulating bath salts, but
  I am having trouble with the stability on this since it would lose it’s smell after a month in 40C oven.

  The formula:

  Epsom salt 88%

  Himalayan Pink Salt 8%

  Tapioca Starch 1%

  Sweet almond oil 0.1%

  eucalyptus oil 0.6%

  polysorbate 20 1%

  Is there a better way to do stability on salts? They also clump up, so I don’t know if that is right to compare it to a RT product. The main problem is that I need to make them still smell like eucalyptus after the 3 month mark.

  Please let me know! Any advice is appreciated and I can provide more info if needed!

  Aniela replied 1 month ago 2 Members · 3 Replies
• 3 Replies

• 

  Aniela

  Member

  December 29, 2024 at 11:23 am

  Please remember that Dr Google can always be of help😉

  1. If you have taken the time to check the ingredients’ list of similar products on the market (sold by established brands), you’d have noticed on the said lists, things like silica, or dendritic salt, or tapioca starch. Any of these will prevent your salts from clumping, but dendritic salt greatly boosts fragrance retention.

  2. You do list tapioca starch, but for an anti-clumping effect, the % should be around 10, not 1.

  3. What is the benefit of introducing almond oil/any carrier oil in the formula? I suggest you take it out.

  4. What’s you packaging?

  • This reply was modified 1 month ago by  Aniela.
  • 

    chemjunnph

    Member

    December 30, 2024 at 3:01 pm

    Thank you so much for your input!

    I did think about using dendritic salt, but realized that tapioca starch would work the same (the one I’m using is natrasorb bath) and this was being used for a different formula, so I didn’t want to buy a separate ingredient just for this project.

    I only used 1% since the amount of oils were very low, but I think I will try to increase it and see if it will help retain the EO. The almond oil was just added since they wanted it as a marketing ingredient.

    This will be packaged in a jar (not sure if glass or plastic yet)

    • 

      Aniela

      Member

      December 31, 2024 at 10:31 am

      Natrasorb is fine, just go for 10%- it does nothing at 1%, hence the clumps you’ve noticed.

      As for stability tests, your safety assesor should be able to advice you on that.

Log In to Reply