Bobzchemist
Forum Replies Created
-
@Nyree, there are three or four levels of “custom” packaging, from least to most cost:
1) Pure stock containers, decorated, colored, and/or labeled to make them unique.2) Pure stock containers, with sleeves or other glued-on decorations/accessories to make them unique.3) True custom containers, where an unique mold and/or mechanism is designed and manufactured just for you. The costs for this option typically run into hundreds of thousands of dollars.The advent of custom 3D manufacturing will probably make options 2 and 3 less expensive as time goes on, but we’re still talking bunches of money. -
Have fun! Bring us back some good info - I’ve never been to this exhibition.
-
Also this from Dow Corning:
-
Personally, I’d use an organo-modified silicone wax, which will help couple the dimethicone into the formula, improve feel, and increase occlusivity.
Something like this from Siltech:or this from Dow Corning:Also, read this: -
The lactylates don’t quite fit into the HLB system…
-
Good luck with that. You really need to talk to an analytical chemist or two, and I don’t think that there are any here.
-
OK, but that’s two different effects you are trying to achieve.
Taking the tackiness out of petrolatum requires entirely different emollients than the ones that will give you a soft, creamy feel by themselves.Also, “richly creamy and soft” are sensorial terms - they only tell you how the emollients will feel on the skin. This has NOTHING to do with how well they work as skin-softening ingredients.Ideally, you should work on the desired function(s) of your cream first. Then, once you’ve gotten the cream to perform the way you want it too, you can work on adjusting the skin feel so that it matches the creaminess you’re looking for. -
@Danielyau, at this point, all I can say is “try it and see”.
I know the people at Lipo who developed their MOS blends, and I know that they spent several hundred lab-hours trying to perfect those blends. (This was back when the controversy over Mineral Oil first started, and the companies scrambling to replace Mineral Oil needed a dead-on perfect replacement). If you need to replace Mineral Oil yourself, you can either use the results of their work, or spend the same amount of time in your lab replicating their work.As a starting point, you are going to need a heavy, greasy, non-absorbent emollient mixed with at least one light, spreadable emollient.Good luck. -
If you are in the US, to have an “antibacterial” claim, which makes your product an OTC pharmaceutical, you need to use Monograph ingredients or be prepared to file a NDA. The soap would have to be made in a FDA-registered, cGMP-compliant facility, as well.
Also, how would you keep the Lauric Acid from being saponified? -
I’ve found that the “creamiest feel” frequently comes from emollients that melt near skin temperature. Myristyl Myristate is one of my favorites. The choice of emollients depends on how you’re going to use them. What product will you put it in?
The easiest thing to do is to find a single company that makes a variety of emollients and test an assortment of their products. -
@danielyau, It will be almost impossible to match the feel of mineral oil without using a blend of emollients to do so.
If you really need to match, and not improve, the feel of mineral oil, then your best bet is the Lipovol MOS series, from Lipo. These are blends of esters Lipo came up with specifically to replace the feel and performance of mineral oil (MOS = Mineral Oil Substitute). There are three grades, to match the three most common grades of mineral oils used in cosmetics: MOS-70, MOS-130, MOS-350:
http://www.lipochemicals.com/products/lipovol-mos-350
Another good alternative is Permethyl 102A (Isoeicosane) from Presperse, blended with some Permethyl 104A (Polyisobutene), with the amount of 104A needed depending on the viscosity of the mineral oil you are trying to replace. -
It’s mostly because Accounting needs the precision.
-
I guess the odd part is the water self-adjusting. I just use sum, and then recalculate the entire formula in another column.
-
Perry’s does something odd with the math. I think mine is easier to understand. Also,mine does more cost analysis - per pound, per kilo, per unit, etc.
-
I think for true custom work there’s usually a 25,000 piece minimum order. Do you have that kind of money availablr?
-
@DavidW - I think we have to start nagging people about good behavior.
(Dear God - I’ve become my father.
) -
It helps when you’ve worked with the polyisobutenes before. The same properties that make them horrible for skin care make them AWESOME for mascara.
-
This is precisely why they make us list every ingredient on our ingredient labels, not just the ones that might be allergens - they all might be. We try to avoid the ones really large sections of the population are commonly allergic to, but that’s the best we can do and still be able to make products.
-
@heraklit, aside from water, EVERYTHING is a known allergen, to someone somewhere.
-
Incredibly sticky and adhesive, near zero spreadability. STP oil treatment is~90% 45000.
-
Try it and see. It’s worth experimenting with multiple emulsifiers, just for your future knowledge.
-
1300. The others are nasty.
-
@nyree, please post your question in a new, seperate discussion. This discussion is only for introducing yourself.
-
I don’t think they ever will, but it’s a real shame. With a better search, more frequent updates, and some minimal time taken to verify supplier information, they could have easily been the very best source of information on anything with an INCI name. Google licenses their search engine to websites, so there’s no reason except for money to have a sub-standard search ability.
Instead, they’re at a point where they’re rapidly falling behind ULProspector and SpecialChem. Right now, there’s not one single site that consolidates everything, but I can see it coming - and it won’t be the buyers guide. I think the PCPC’s anachronistic, desperate desire to prevent their source material from being easily and freely available on the web has clouded their judgement - they money that they could have made from small, discrete ads would have vastly overwhelmed the money they are currently extorting for new editions of the Dictionary, etc. by now.