Home Cosmetic Science Talk Formulating Good cooling effect in shampoo

  • Good cooling effect in shampoo

    Posted by Annyeap on May 20, 2022 at 5:29 am

    I have prepared a shampoo and find that when used (me and other people), it doesn’t have a cooling effect even though I have 0.75% menthol in the shampoo. I am wondering why doesn’t it have a cooling effect with that percentage. Is the Menthol % too low, or is there something in the formulation that is reducing the cooling effect?

    my shampoo is just a basic shampoo
    SLES (70%) - 16%
    Cocamidopropyl Betaine - 5%
    Lauryl Glucoside - 3%
    CDE - 1%
    some plant extracts - 1%
    preaervative - 0.1%
    Fine salt (thickening)  - QS
    Citric acid (for pH adjustment)  -  QS
    Fragrance - 1%
    Solubilizer - 2% (for menthol)

    ketchito replied 1 year, 6 months ago 3 Members · 8 Replies
  • 8 Replies
  • ketchito

    Member
    May 20, 2022 at 11:45 am

    @Annyeap Which type of solubilizer you’re using? You can try removing the solubilizer, and use CDE for that purpose (warm the mixture a bit to speed menthol dissolution). Also, you can add some menthyl lactate, since both menthyl lactate and menthol have a synergy. You could even search for a mixture of both, that already has a proper ratio (eutectic).

  • Annyeap

    Member
    May 25, 2022 at 9:58 am

    @ketchito thanks for your recommendation. I am using C12-15 Pareth-12 as my solubilizer. would the solubilier affect the cooling effect?

    Would anything in the shampoo stop the cooling effect from showing?

  • ketchito

    Member
    May 25, 2022 at 1:09 pm

    @Annyeap There doesn’t seem to be anything that impairs cooling effect in your formula. Nevertheless, try without the solubilizer and disperse Menthol in (warm) CDE, to see how it goes.

  • Annyeap

    Member
    May 26, 2022 at 2:15 am

    @ketchito thanks. i will definately give it a try

  • Chemaccounts

    Member
    May 29, 2022 at 9:09 am

    Annyeap said:

    @ketchito thanks. i will definately give it a try

    Hi did u try?

  • Annyeap

    Member
    June 8, 2022 at 3:06 am

    @Chemaccounts yes i did try and i could actually feel the cooling effect. 

    @ketchito thanks very much for the help. the cooling effect is much better. Can I know what is the reason to premix menthol with CDE instead of a solubilizer? besides CDE, what other surfactants could i mix menthol with if i don’t have CDE in the formulation?

  • ketchito

    Member
    June 8, 2022 at 12:12 pm

    @Annyeap CDE is not as good solubilizer as Polysorbates, but it’s enough for Menthol. Alternatively, you could try with your glucoside instead of CDE (although I’ve never tried it that way, so I don’t know if that would work).

  • Annyeap

    Member
    August 11, 2022 at 8:06 am

    @ketchito thank you. I will try it out

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