Home Cosmetic Science Talk Formulating Salt Spray Help (Part 2)

  • Salt Spray Help (Part 2)

    Posted by dmh0023 on April 29, 2015 at 5:45 am

    Hi, 

    So my first two forays into making a salt spray turned out a spray that I’m pretty happy with. However, I’ve noticed that a film forms on the surface if the bottle is left sitting for a while. I’m thinking perhaps I don’t have the proper amount of Polysorbate 20 in the recipe, or I should be using a hand blender instead of hand stirring. Here is my recipe:
    Water - 480g
    Magnesium Sulfate - 60g
    Pink Himalayan Salt - 10g
    Kelp Bioferment - 8g
    Dimethicone 500 - 30g
    Polysorbate 20 - 30g
    Optiphen - 6g
    I’m heating the water to near boiling in pyrex, and then adding all of the pre-mixed ingredients (except the salts) at one time, stirring vigorously, then adding the salts and continuing to stir. Like I said, the product itself is great, but I’d prefer to not have a product I have to shake before each use. Am I using an improper amount of Polysorbate 20? 
    Cheers,
    D
    Bill_Toge replied 9 years, 1 month ago 2 Members · 1 Reply
  • 1 Reply
  • Bill_Toge

    Member
    April 29, 2015 at 7:01 am

    my initial suspicion is that your Optiphen and/or dimethicone are separating

    rather than trying to fix this with a solubiliser I’d suggest using a more water-soluble preservative (e.g. DMDMH) in place of the former, and a water-miscible silicone (e.g. DC 193) in place of the latter

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