Bobzchemist
Forum Replies Created
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It may be a better idea to back up and look at what you’re trying to do with this base.
A number of non-traditional emulsifier systems are both cold-process and extremely robust. They are not cheap, however.Are you absolutely committed to using Polysorbate 20? -
Jeen ICE-T series
Pemulen TR-1 or TR-2Others exist as well.Ultrez-10 has little to no emulsification power, so your formula is relying on Tween 20 as a sole emulsifier - probably won’t work at all. Are you familiar with the HLB system? -
I’m a huge fan of Ganex WP-660, but I don’t think you could call it natural. I don’t think “natural, “water-resistant”, and “sunscreen” are going to co-exist well - any two of the three could work, though.
In the US, sunscreens can either be 40 minutes or 80 minutes water-resistant. Claiming 60 minutes is misbranding. -
Are you trying for ingredient label appearances or to actually avoid certain classes of surfactants?
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Nice. Start new discussion, and include specs, pricing and contact info, please.
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Either, I think. Make sure ingredient dec is correct for US.
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Try under vacuum?
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Mayur,
Do you sell ingredients? -
Sulfur makes it an OTC
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Wear gloves! A friend wrecked his hands for years after formulating with sulfur.
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Are you a professional or a hobbyist?
Also, which INCI database are you looking at? I found 5 suppliers. -
Lubrajel http://www.lubrajel.com/
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You did the right thing by checking with Pilot. Just expand your search to the other surfactant manufacturers, BASF, for example.
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I agree with Perry, @KenWiener.
Could you please start a new discussion with more information on your perlite microspheres and contact information for you and/or your company?Microspheres made from glass, silica and various plastics have been used in the cosmetic industry for the past 10-20 years. I look forward to seeing what you have to offer.Bob Zonis -
Mike,
You probably need to test what dissolves or softens the deodorant/antiperspirant residue, rather than the finished product, that way you’ll eliminate any problems with co-solvent effects.Be careful with things like limonene, orange oil, etc., especially at 100% strength. From personal and plant experience, I know that they can be extremely irritating to the skin, even when washed off fairly quickly.@Ayla does bring up a good point, though - I’d think that most people would consider soap, etc to do a good enough job, no?Bob -
Formulating a product for extreme cold would likely require a different approach from formulating a product for extreme heat, etc. Making a product that was just as comfortable and effective for someone wearing heavy wool socks in the winter as it is for someone wearing flip-flops in the summer would require so many formulation compromises that you’d likely wind up with a mediocre product that sort-of works under all conditions, instead of a great product that only needs to work under one condition.
How about suggesting that they launch a 3 or 4 SKU product line instead? One for cold, one for heat, etc. -
Dimethicone and amodimethicone can be a challenge to keep stable in a shampoo. I agree with Perry’s suggested fixes.
Also, the size of separated phase probably does not have anything to do with the percentage of the ingredient that’s causing the instability.To fix this in two days (or at least do the lab work for fixing it) you’re going to need to use the shotgun approach.I’d actually do this in two parts - first, prepare a limited set of knock-out batches (don’t bother eliminating the major surfactants, water, etc.) to try to see if you can identify the de-stabilizing culprit.Next, prepare a range of possible solutions, ranging from trying carbopol, to trying Aqua SF-1 and/or other surfactant-tolerant thickeners, to solubilizing the fragrance with polysorbates and/or one of the PEG-Hydrogenated Castor Oils, etc. Try for at least 5 possible solutions, 10 would be better.It’s not the most efficient way of formulating, but if you’re in a hurry, you don’t have time to try one or two different fixes, wait a month to see if they work, and then possibly have to try a different fix and wait another month to see if that worked.Good luck. -
If you can get it wetted out, untreated fumed silica thickens any liquid. A small amount of calcium silicate may be synergistic in aqueous products.
If you can afford it, Cabot makes stabilized aqueous dispersions that eliminate the need for a homogenizer and/or eductor. I suspect you’d need to use high-solid-content surfactants to make this work in a shampoo. -
If this isn’t in the academic literature, the only way to get that information (aside from paying for the testing yourself) would be from the companies that sell Kojic Acid Dipalmitate, Argan Oil, and/or Collagen.
Anyone else would regard this as proprietary information. Sharing it could lose someone their job. -
Brillo?
Seriously, you’d have to test, but something like propanediol might work. -
The US FDA requires you to prove that your cosmetic products are “safe”. They offer no further guidelines for doing this, aside from some specs for heavy metal content.
Most companies introducing a newly formulated product onto the us market will do at least a PET and a RIPT. -
1. Does anyone have experience with organic colorants that can replace Carmine, Yellow 5, Red 7, CI-77492, etc.? Aveda tried this. I don’t know how successful they were, or how legal their products were according to the FDA. Carmine is already a natural color - it is incredibly expensive (over $400/lb at times) - if there were a possible replacement for it, it would have been found already. You will have an extremely limited color palette to work with, as the US FDA requires cosmetic grade iron oxides to be synthetic.
2. Does anyone have experience with the ‘Annatto’ yellow dye in colour cosmetics? Yes. Not light stable. -
We’ve seen microbial/fungul growth in our liquid soaps up to pH 11…
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I agree with Matt. If you aren’t getting enough viscosity from the Pemulen, you can pair it with a small amount of Carbopol.