Forum Replies Created

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  • Shams

    Member
    August 28, 2023 at 9:40 pm in reply to: Balm behaving the opposite of what I’d expect..

    @Perry44 Can you please elaborate how freeze/thaw will show the above mentioned problems in the balm. Is it melting or graininess or what?

    Thanks

  • Shams

    Member
    March 13, 2023 at 11:01 pm in reply to: Natural (plant based) oil soluble colours for lip balm / lipstick

    Check Sensient. They have oil soluble natural pigments made of beet root, raddish, carrots….etc

    They are called “Natpure Xfine ‘” range

  • Shams

    Member
    November 18, 2022 at 2:14 am in reply to: w/o emulsifiers in o/w emulsions

    Thanks

  • Shams

    Member
    November 18, 2022 at 2:11 am in reply to: Zinc rash cream

    Glyceryl Stearate Citrate is anionic emulsifier.
    Zinc + ions don’t prefer anionic.
    For ZnO creams , it is better to use non-ionic emulsifiers 

  • Shams

    Member
    November 17, 2022 at 10:44 pm in reply to: Water soluble Anti irritant that works at low pH

    Thanks @Paprik

  • Shams

    Member
    November 17, 2022 at 10:12 pm in reply to: Water soluble Anti irritant that works at low pH

    @Paprik. Thanks for that.
    alpha bisabolol is oil soluble and I need to avoid oils in my formula
    would you kindly tell me at what % are you using allantoin? Doesn’t it recrystallise?
    I have tried it at only 0.2% and have a feeling that a turbid hazzy fine layer is developing at the bottom . However it goes away with minimal shaking. So i was suspecting that’s allantoin
    TIA

  • Shams

    Member
    February 17, 2022 at 10:44 pm in reply to: Liquid foundation with coated powders

    @evchem2 yes I am using both.
    pH is between 7.5 - 8
    I see this issue while cooling down the emulsion.

  • Shams

    Member
    January 14, 2022 at 4:27 am in reply to: Anhydrous Cream sweats

    @Anca_Formulator Agree with @kivangel. You are using way too much of butters. Butters should compose no more than 10% of your formula, if you want a product that will be stable at different temperatures.
    You can try thickening your formula with something like : hydrogenated vegetable oil or may be beeswax or any other high melting point wax. Never rely on butters for consistency as they have low melting point

  • Shams

    Member
    November 22, 2021 at 5:06 am in reply to: Niacinamide color change

    @Graillotion I’ll try a chelating agent
    My preservative is a blend of Methylpropanediol, caprylyl glycol and phenyl propanol .
    As for green tea, I use it as an antioxidant , but I can definetly try to take it out

    Appreciate the advice

  • Shams

    Member
    November 21, 2021 at 10:41 pm in reply to: Niacinamide color change

    @Graillotion My other ingredients are:
    Emulsifiers: Stearic acid, GMS, Cetearyl alcohol, ceteareth-20
    Water phase: ultrez, glycerin, betaine and Niacinamide
    Oils : castor, meadofoam, isoamyl laurate
    And then tocopherols, essential oil, Caprylyl glycol, green tea extract

    I don’t use a chelating agent, do you think this will help?
    What pH would you suggest?

    @chemicalmatt I have to say it is not turning bright yellow..more of a dark beige color or a brownish yellow color.
    From your experience, what ingredient do I need to avoid to prevent this Schiff base reaction? I am trying now to read more on the schiff’s base reaction..If you can make it simpler for me , that would be great.

    TIA 

  • Shams

    Member
    November 11, 2021 at 11:19 pm in reply to: Zinc Oxide in loose face powders

    Thanks a lot @Pattsi, just one more question:

    For TiO2 they say it can be used up to 25% in face powders in loose forms and as well not to be used in applications that may lead to lung’s exposure by inhalation!!
    Does this mean they exclude the loose powders from the products that can lead to lung’s exposure ?!!
    I wonder if that’s the case with TiO2, is it the same with ZnO?Can ZnO still be used up to 25% in loose powders?
    TIA
  • Shams

    Member
    November 11, 2021 at 3:59 am in reply to: Substitutes for titanium dioxide

    @Pattsi have you got info on ZnO safety in face powders? Appreciate if you can share links as well. Thanks

  • Shams

    Member
    October 26, 2021 at 2:10 am in reply to: OSU Zinc Study (mixed spf filters)

    Hi @Perry & everyone else.
    I also came across these links.
    I am a bit confused and seeking clarification please: 
    Does this study apply only to sunscreens where a combination of ZnO + other organic UV filters are present or even if ZnO is used alone.
    @Perry Are you able to please share links for the safety of coated and uncoated ZnO
    TIA

  • Shams

    Member
    September 22, 2021 at 2:42 am in reply to: Ascorbyl tetraisopalmitate VS tetrahexyldecyl ascorbate

    Thanks @Pharma
    Thanks @zetein

  • Shams

    Member
    September 20, 2021 at 11:23 pm in reply to: Ascorbyl tetraisopalmitate VS tetrahexyldecyl ascorbate

    @Pharma are you please able to mention me in the post or link it here. I tried searching several times but couldn’t find it.
    TIA

  • Shams

    Member
    September 15, 2021 at 1:32 am in reply to: Solubilising essential oils

    While I agree 7% essential oil is way too high. I highly doubt this will fall within the IFRA regulations
    You can try Symbiosolv clear plus MB

  • Shams

    Member
    August 17, 2021 at 1:20 am in reply to: w/o VS o/w emulsification techniques

    @Dennis I am using Arlacel 1689 (INCI Sorbitan Oleate (and) Polyglyceryl-3 Polyricinoleate) + GMS each at 5%. 

    @chemicalmatt Thanks for that. I am adding the water phase very slowly as you said. andthen homogenise. Do i still need to homogenise when the product cools down to 35C?

  • Shams

    Member
    July 29, 2021 at 12:13 am in reply to: Titanium Dioxide for rinse-off product

    titanium dioxide will give a white rub effect on the skin when used, that’s what i saw when i earlier attempted doing this.
    Why not use the pearliser but at higher concentration. I made an opaque face wash with Euperlan PK 1200 at 10%..not pearly

  • Shams

    Member
    July 28, 2021 at 12:23 am in reply to: Emulsion stability

    @chemicalmatt I used NaOHto neutralise stearic to pH around 7. Then homogenised. Then at the end I adjusted the final pH to 6.5 . Does this sound good or bad?

    If you will put the samples under 40C as you said, how long incubation can predict a 3 year shelf life

  • Shams

    Member
    July 27, 2021 at 5:14 am in reply to: Emulsion stability

    Thanks @Pharma
    I use stearic acid 5%
    Emulgade 1000 1%
    Cetearyl alcohol 1%
    Variety of oils 18%
    Ultrez 10 0.1%
    Hyaluronic acid 0.5%
    The rest is water , water-based actives and extracts

  • Shams

    Member
    May 11, 2021 at 6:12 am in reply to: stearic acid and pH of emulsion
  • Shams

    Member
    March 26, 2021 at 4:39 am in reply to: Opacifying a cleanser formula

    Thanks @Abdullah I dohave cetearyl alcohol. I tried it but not happy with the feel.
    Plus I would prefer to go cold process, since it is only for opacifying and i don’t want to add any oils in this cleanser

  • Shams

    Member
    March 19, 2021 at 4:25 am in reply to: Lotion Stability Issues

    @chemicalmatt can you please further explain howPG or BG help wioth this water exit?
    Also, will glycerin do the same job.
    Thanks

  • Shams

    Member
    March 25, 2024 at 4:35 pm in reply to: Glycolic/salicylic cleanser

    they suspend, but separate within couple of days

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