Home Cosmetic Science Talk Formulating Preservatives for serum(clear gel)?

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  • Preservatives for serum(clear gel)?

    Posted by alan123 on August 27, 2020 at 8:51 pm

    Water and  Phenoxyethanol and Ethylhexylglycerin makes milky sollution.

    _________

    I increased Glycerin and propylene glycol or used peg40 hydrogenated c.o.

    However, I am still not happy with the product. it is milky.

    *I havent waited to see if it settle down in a day or two. Probably it will become clearish

    Any suggestions? Thanks 

    alan123 replied 3 years, 5 months ago 2 Members · 9 Replies
  • 9 Replies
  • ngarayeva001

    Member
    August 27, 2020 at 9:09 pm

    Germall plus powder is your best bet. 

  • alan123

    Member
    August 27, 2020 at 9:22 pm

    Thank you I got it just now.

  • alan123

    Member
    August 27, 2020 at 9:43 pm

    However, is it anything else I can do? for example, I see this formula
    The Ordinary Hyaluronic Acid 2% + B5
    Aqua (Water), Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Panthenol, Ahnfeltia Concinna Extract, Glycerin, Pentylene Glycol, Propanediol, Polyacrylate Crosspolymer-6, Ppg-26-Buteth-26, Trisodium Ethylenediamine Disuccinate, Citric Acid, Ethoxydiglycol, Caprylyl Glycol, Hexylene Glycol, Ethylhexylglycerin, Phenoxyethanol, Chlorphenesin

  • alan123

    Member
    August 27, 2020 at 11:59 pm

    @ngarayeva001 unfortunately  - Germall Plus (Powder) - European Union (EU) - Not to be used in body lotion and body cream  :'(

     
  • ngarayeva001

    Member
    August 28, 2020 at 1:36 am

    Germaben II is an option too, but it is misbehaving with some ingredients and gets cloudy. I know it does with some cationic material and electrolytes. What else is in the formula?

  • alan123

    Member
    August 28, 2020 at 1:21 pm

    Water 68.05%
    Glycerin 10.00%
    Preservative ?? 1.00%
    Propylene glycol 10.00%
    SepimaxZen 0.25%
    Alpha Arbutin 0.50%
    VitC3GlycAsc 10.00%
    hialuronic acid 0.20%

    Water 77.05%
    Glycerin 10.00%
    Preservative  1.00%
    Propylene glycol 10.00%
    SepimaxZen 0.25%
    Retinol 0.50%
    Hyaluronic Acid 0.20%
    Ceramide 1.00%

    I have tried Phenoxyethanol and (Phenoxyethanol and Ethylhexylglycerin) This is what I have in stock at the moment and both are giving me a slightly hazzy solution if I add SepimaxZen at the end and wait 8 hours.

    or it is very milky if I add all ingredients(mix) and at the end add preservative and mix.

  • alan123

    Member
    August 28, 2020 at 3:04 pm

    Update: I have ordered 2 preservatives to test and see if I am going to get a more clearer solution/serum.

    I will write next week my results.
    1.Sodium benzoate & Potassium sorbate
    2. Dehydroacetic acid & Benzyl alcohol (GFecosafe / Preservative Eco equivelent)

  • alan123

    Member
    August 28, 2020 at 3:29 pm

    Germaben II is an option too, but it is misbehaving with some ingredients and gets cloudy. I know it does with some cationic material and electrolytes. What else is in the formula?

    I am trying to avoid parabens due to marketing purpose..

  • alan123

    Member
    August 28, 2020 at 10:04 pm

    Solved. I just added sepzen at the end and left it over night.

    lowered pg and glycerin. also.

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