Home Cosmetic Science Talk Formulating Face wash design

  • chemist77

    Member
    June 16, 2018 at 5:51 am

    @Gunther can’t you request a sample from a distributor 

  • gunther

    Member
    June 16, 2018 at 7:55 pm

    Does cold brew coffee has any better smell?

    While higher temperatures improve solubility,

    heat may degrade or evaporate some labile coffee chemicals

    and they may precipitate out of solution when it cools off to room temperature.

    Connoisseurs say you must wait at least 24 hours for a good cold brew coffee.

    I think you can add some preservative to the water, and let it sit for several days.

    I wonder if adding some surfactants to the water, yields a better coffee extraction.

     @Chemist77 unfortunately the Dow local distributor here mostly sells agricultural chemicals.

  • belassi

    Member
    June 16, 2018 at 8:15 pm

    @Chemist77 - Dow here won’t talk to me because I can’t order the large minimum quantity they require. Teacher’s Supply in the USA has it.
    @Gunther - I hadn’t thought of that and yes, it is an interesting idea. I will try it. Since it is not for internal use I see no reason not to add a surfactant.

  • gunther

    Member
    June 16, 2018 at 8:30 pm

    @Belassi would you mind posting the link for Teacher’s supply?
    I couldn’t find it there. Search bar didn’t help either.

  • belassi

    Member
    June 17, 2018 at 1:29 am

    https://www.teachersource.com/ Teacher’s Source, sorry to have wasted your time.

  • chemist77

    Member
    June 17, 2018 at 3:58 am

    @Belassi Univar??  

  • belassi

    Member
    June 17, 2018 at 4:32 am

    Univar has big MOQs

  • chemist77

    Member
    June 17, 2018 at 5:04 am

    wow sampling for you is a mammoth task then.

  • gunther

    Member
    June 18, 2018 at 10:05 pm

    I tried cold brewing coffee 
    230 ml deionized water
    150 mg SLS powder
    mixture of finely and coarse ground coffee
    and it gave a distinct reddish, brick like color.
    The smell was nothing to write home about, but neither did hot brewing for that particular ground coffee.
    I’ll try again with a more expensive, aromatic one, to see if it’s any better.

    Interesting study on coffee oils:

    Topical use and systemic action of green and roasted coffee oils and ground oils in a cutaneous incision model in rats (Rattus norvegicus albinus)

    Abstract
    Introduction
    Wounds are a common health problem. Coffee is widely consumed and its oil contains essential fatty acids. We evaluated the local (skin) and systemic effects associated with the topical use of coffee oils in rats.
    Methods
    Punch skin wounds (6 mm) incisions were generated on the backs of 75 rats. Saline (SS), mineral oil (MO), green coffee oil (GCO), roasted coffee oil (RCO), green coffee ground oil (GCGO) or roasted coffee ground oil (RCGO) were topically applied to the wounds. Healing was evaluated by visual and histological/morphometric optical microscopy examination; second harmonics generation (SHG) microscopy, wound tissue q-PCR (values in fold-change) and blood serum (ELISA, values in pg/mL).
    Results
    RCO treated animals presented faster wound healing (0.986 vs. 0.422), higher mRNA expression of IGF-1 (2.78 vs. 1.00, p = 0.01), IL-6 (10.72 vs. 1.00, p = 0.001) and IL-23 (4.10 vs. 1.2, p = 0.05) in early stages of wound healing; higher IL-12 (3.32 vs. 1.00, p = 0.05) in the later stages; and lower serum levels of IFN-γ (11.97 vs. 196.45, p = 0.01). GCO treatment led to higher mRNA expression of IL-6 (day 2: 7.94 vs. 1.00, p = 0.001 and day 4: 6.90 vs. 1.00, p = 0.01) and IL-23 (7.93 vs. 1.20, p = 0.001) in the early stages. The RCO treatment also produced higher serum IFN-α levels throughout the experiment (day 2: 52.53 vs. 21.20; day 4: 46.98 vs.21.56; day 10: 83.61 vs. 25.69, p = 0.05) and lower levels of IL-4 (day 4: 0.9 vs.13.36, p = 0.01), adiponectin (day 10: 8,367.47 vs. 16,526.38, p = 0.001) and IFN-γ (day 4: 43.03 vs.196.45, p = 0.05). The SHG analysis showed a higher collagen density in the RCO and GCO treatments (p = 0.05).
    Conclusion
    Topical treatment with coffee oils led to systemic actions and faster wound healing in rats. Further studies should be performed are necessary to assess the safety of topical vegetal oil use for skin lesions.
    http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0188779
  • belassi

    Member
    June 18, 2018 at 11:41 pm

    I use organic coffee, it smells great.

  • gunther

    Member
    June 19, 2018 at 2:56 pm

    No problem @Belassi

    In fact I’m thankful to you for posting them.
    Teachersource looks great

    Please keep us posted on how their Polyox works in personal care products.

    Right now I’m still surfing their site for some projects for my daughter’s science fair (and some for me).

  • belassi

    Member
    June 21, 2018 at 6:26 pm

     :) 

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