Forum Replies Created

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  • belassi

    Member
    March 1, 2015 at 2:15 pm in reply to: Problems with sulphate free reformulation

    Not yet. The two BASF suppliers I use, don’t stock it. I have asked the BASF support people if there is anyone in the country who does.

    The PEG-150 thickness varies a lot with temperature and we have a climate here that varies from 4C to 37C.
    So I am still struggling with this. I ordered some konjac root powder but that is from Thailand, no supply in Mexico.
  • SLS is an ingredient I would want to leave out of toothpaste. It is an irritant to the mucous membranes. There are far better surfactants available.

  • belassi

    Member
    February 26, 2015 at 8:54 pm in reply to: Humans are animals too!

    A lotion. For treating what, though?

    I’d better tell you, I have tried that. You know I’m interested in therapeutic products.
    My mother in law who is over 90 wanted to ease her arthritic joints and had heard that it could help. So I procured some and made an extraction using 90% ethanol, I think it was, this was quite a while ago so it’s hard to recall exactly. Then I evaporated as much ethanol as possible. I dissolved the nonpolar result in capric/caprylic triglycerides so as to get really rapid penetration into the dermis, added some aloe vera and glycerol monostearate and made an emulsion. Being just an experiment I didn’t bother with HLB and so on, it was rough and ready, but I ended up with a brown cream. 
    Unfortunately she reported  that it was completely useless. Having read as much literature as I could find, I fail to see how it could have worked anyway, the appropriate receptors are in the brain, not in the damaged joint area. At least as far as I understand it, but then, this kind of thing is a shot in the dark at best. I imagine there must be teams at work in the large cosmetics companies who do nothing except experiment with flora to see which species show effects.
  • belassi

    Member
    February 26, 2015 at 7:07 pm in reply to: Preservative mix in shampoo

    The interesting thing for me is that I switched from using sodium benzoate to potassium sorbate because I’d heard that the benzoate could irritate. Did I make the wrong decision?

  • belassi

    Member
    February 26, 2015 at 6:20 pm in reply to: hair removal

    Thanks Lara. I am talking to both Indena and one Chinese supplier at the moment.

  • belassi

    Member
    February 26, 2015 at 6:09 pm in reply to: Humans are animals too!

    I see that AZIM is developing cannabis based products. I’ll have to put myself forward as a tester! (Laughing)

  • belassi

    Member
    February 26, 2015 at 12:20 am in reply to: Humans are animals too!

    “by definition, humans are in fact also animals…” is not correct

  • belassi

    Member
    February 25, 2015 at 10:07 pm in reply to: PEG-8 Dimethicone
  • belassi

    Member
    February 25, 2015 at 3:49 pm in reply to: Preservative mix in shampoo

    Bill: potassium sorbate is most effective below pH 6, but causes terrible yellowing/browning in liquid products

    Aha. So this is why a small test bottle of our shampoo turned brown after about 8 months or so? I had assumed the preservative had failed. It still smelled OK.
  • belassi

    Member
    February 24, 2015 at 10:06 pm in reply to: Preservative mix in shampoo

    Another Kao customer eh! Try the Akypo RLM 45 CA and Foam RL 40.

  • belassi

    Member
    February 24, 2015 at 8:39 pm in reply to: Preservative mix in shampoo

    I can only speak for myself, but in my opinion that is way too much. I only use one of those preservatives in our sulphate-free shampoo, potassium sorbate, at 0.5%, and the shelf life has been at least 6 months in a sample that we used to open and allow customers to smell the aroma.

    Also note that your surfactants themselves may or may not already contain preservatives.
  • belassi

    Member
    February 24, 2015 at 7:01 pm in reply to: hair removal

    It seems there has been quite a lot of interest in this from the general public. I’ve seen forums where people are ordering the pure acid from China at around $1,000/kg (good grief I asked my rep for a 150g sample he must be shaking his head) and since this paper was published 4 years ago I don’t understand why I haven’t seen commercial products on the shelf.


    Update: Possibly price. It’s an expensive material. However, I see no problem in marketing it against costly laser treatments and painful waxing. I estimate a price point of around $60 retail for a 2 oz package.
  • belassi

    Member
    February 24, 2015 at 6:57 pm in reply to: Bacteria in Glycerin Containing Product?

    You’ll definitely have to use a preservative in that. I know some people think glycerin ‘helps’ preserve things, but in my experience, not.

    The preservative you use will depend largely on your location and I am not sure where you’re based. Since this is by definition not for human use, a large number of possible preservatives could be considered. I only know about cosmetic preservatives - I suspect there are a large number of low cost preservatives you could choose rather than those approved for human use.
  • belassi

    Member
    February 24, 2015 at 6:03 pm in reply to: Bacteria in Glycerin Containing Product?

    Got to be either bacterial or a fungus such as yeast. Take it to a microbiology lab and have it identified. You don’t have any preservative in that list!

    Your LOI adds up to around 150% by the way.
  • belassi

    Member
    February 24, 2015 at 5:32 pm in reply to: hair removal

    I haven’t been able to find any human tests at all. It appears that Dr Bernd is still at the same university so I will have to see if I can get in touch with him … my German is very basic, I hope he speaks English or Spanish!

    The pure acid was used in the original tests. It appears to be relatively insoluble in water and I don’t much like alcohol in a skin product so I will be looking to develop an alternative, probably an emulsion. The original looks like it is a solution rather than emulsion. I’m going to have to recruit a panel of testers.
    According to my health department guidelines such a product development should be marketable here in Mexico and also in the UK, but I don’t think would be allowed in the USA due to the way the FDA works.
  • belassi

    Member
    February 24, 2015 at 3:28 pm in reply to: Robert Chesebrough ate one spoon of petrolatum every day

    ‘In front of an audience he would burn his skin with acid or an open flame, then spread the clear jelly on his injuries’ - I’d have had him locked away for his own safety! Sorry but I detest petrolatum. For me, it is a foreign substance, the body does not make it, nor need it.

  • belassi

    Member
    February 24, 2015 at 3:25 pm in reply to: (Sea) Salt in wash off and leave on products VS Acne?

    The obvious thing to do is to try duplicating the effect using the lab. Is it just the effect of soaking the skin in water? Soaking in salt water (NaCl)? Soaking in sea-salt  water?

  • belassi

    Member
    February 24, 2015 at 5:39 am in reply to: Detergent thick

    Normal. Hard to say more without seeing the formula but borax? Why borax?

  • belassi

    Member
    February 24, 2015 at 5:34 am in reply to: Petrolatum Replacement - the best natural ingredient to use

    Kpangnan butter.

  • belassi

    Member
    February 24, 2015 at 5:32 am in reply to: Hair Conditioner Formula

    Guar Hydroxypropyltrimoniun Chloride is Ecosmooth 100

    also known as Cosmedia Guar.
  • belassi

    Member
    February 23, 2015 at 11:09 pm in reply to: USP 61 Micro Test

    Could it be a shipping problem, something temperature dependent?

  • belassi

    Member
    February 23, 2015 at 5:19 pm in reply to: How to avoid the bubble in the formula

    That’s the problem with these types of thickener.

  • belassi

    Member
    February 23, 2015 at 5:18 pm in reply to: Phenol

    Phenol is a prohibited ingredient in Mexico, I’m pretty certain. Very nasty stuff. And this is a product from where?

  • belassi

    Member
    February 21, 2015 at 11:56 pm in reply to: Problems with sulphate free reformulation

    I can get Arlypon VPC from C.Lar but I don’t see the TT on their list. However, since it’s BASF I should be able to get hold of it in-country. Many thanks for the suggestion.

  • belassi

    Member
    February 21, 2015 at 3:04 pm in reply to: Substitute for urea

    It will be too far to go to the nature park. 

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