Home Cosmetic Science Talk Formulating Please help formula separates!

  • Please help formula separates!

    Posted by Peta1 on July 7, 2022 at 5:58 am

    Hi, so I made a simple leave in conditioner but then after a few weeks water started separate from it. I wanted it to be a light leave-in conditioner so i used 0.05% of the emulsified blend (Glyceryl Stearate (and) Cetearyl Alcohol (and) Sodium Stearoyl Lactylate) even though the usage rate is 2%-8% Could this be the only reason it separated. I would love some help I am trying to learn to be better at this.
    Makes 226.8g

    Phase1
    Distilled Water 85.75%
    Glycerin- 3.75%
    BTMS-50-  0.875%
    Phase 2
    Castor Oil- 2.5%
    Emulsified Blend- 0.625%
    Sorbic Acid- 0.625%
    Mango Butter- 3.875%
    Phase 3
    Vitamin E -0.625%
    D-Panthenol- 0.125%
    Fragrance- 1.25%

    Peta1 replied 1 year, 10 months ago 3 Members · 3 Replies
  • 3 Replies
  • Pattsi

    Member
    July 7, 2022 at 8:49 am

    I’m not a formulator but from your list, it seems you are a bit low on emulsifier, you have to try what ratio work best for your formula and might consider preservative as well.
    Lets wait for experienced members advices.

  • ketchito

    Member
    July 7, 2022 at 11:54 am

    I agree with @Pattsi. You have a very low level of emulsifier, especially for butters, which are hard to emulsify. Btw, in the body of your message you mention 0.05% of emulsified blend, but the formula shows 0.625%. Which one is correct?

    Also, sorbic acid alone is not going to protect your product, and might cause some discomfort in consumers at high levels.

  • Peta1

    Member
    July 7, 2022 at 12:17 pm

    @Pattsi @ketchito thank you! 0.625% is correct one. Are there any other preservatives you recommend? 

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