Brow Soap

Hi, I'm working on an eyebrow soap similar to "Lash Brow Soap Brows". The ingredience list :Water, Glycerin, Steareth-21, PVP, Parfum, DMDM ​​Hydantoin.
 I tried adding  1% PVC and 20/ 30 /35% Steareth-21, but I only get sticky non-transparent product which in no way resembles to the target product. Any idea how to make transparent semi-solid brow soap?

Comments

  • I saw that the label states China as the country of production, so I decided not to stick to the ingredients on the label. I replaced steareth with ceteareth-20 (40%) and managed to achieve a clear semi gel, but it is still too sticky.
  • StanleyStanley Member
    you can do a brow gel with glycerin soap and fibers to it..
  • Bill_TogeBill_Toge Member, Professional Chemist
    edited July 24
    what's the K number of the PVP you're using?
    UK based formulation chemist. Strongest subjects: hair styling, hair bleaches, hair dyes (oxidative and non-oxidative) I know some stuff about: EU regulations, emulsions (O/W and W/O), toothpaste, mouthwash, shampoos, other toiletries
  • KarolinaPLKarolinaPL Member
    edited July 26
    Stanley said:
    you can do a brow gel with glycerin soap and fibers to it..
    My client said that he doesn't want to have any detergent/ NaOH etc in his brow soap
  • KarolinaPLKarolinaPL Member
    edited July 26
    Bill_Toge said:
    what's the K number of the PVP you're using?

    K-90 and K-30. But I got better results with 90

  • StanleyStanley Member
    Use beeswax does your client have a benchmark?
  • Stanley said:
    Use beeswax does your client have a benchmark?
    He want to have sth similar to Lash Brow Soap Brows https://sklep.lashbrow.pl/en_US/p/Soap-brows-Lash-Brow/694

    Unfortunately beewax is not an option for him
  • Bill_TogeBill_Toge Member, Professional Chemist
    K-90 is sticky and fibrous by nature; try using K-30, and adding PEG-40 or PEG-60 hydrogenated castor oil for a more subtle effect
    UK based formulation chemist. Strongest subjects: hair styling, hair bleaches, hair dyes (oxidative and non-oxidative) I know some stuff about: EU regulations, emulsions (O/W and W/O), toothpaste, mouthwash, shampoos, other toiletries
  • @Bill_Toge @Stanley . thank you for your answears. I am still wondering if it is possible to make eyebrow soap on steareth-21 and get transparent soap . I also wonder about the preservative - the mass remains liquid up to 80oC. Will any preservative be able to handle this temperature? I was thinking about  DMDM Hydantoin or phenoxyethanol
  • I have one more problem. When i'm adding PVP (2%) , soap turns opaque. Would dimethicone or isopropyl myristate help? 
  • Bill_TogeBill_Toge Member, Professional Chemist
    phenoxyethanol is stable up to 120 °C; I wouldn't recommend using DMDM hydantoin above about 60 °C
    UK based formulation chemist. Strongest subjects: hair styling, hair bleaches, hair dyes (oxidative and non-oxidative) I know some stuff about: EU regulations, emulsions (O/W and W/O), toothpaste, mouthwash, shampoos, other toiletries
  • Bill_Toge said:
    phenoxyethanol is stable up to 120 °C; I wouldn't recommend using DMDM hydantoin above about 60 °C
    thank you .
  • my formula keeps getting better, but the soap is opaque and leaves tiny white lumps on the eyebrows. I want to add Peg-40 Hydrogenated Castor Oil. This should help with my clarity, but I'm not sure what I can do with the white flecks
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