tecnico3vinia
Forum Replies Created
-
Perry said:I think most companies use deionized water. See this post on the subject of water for cosmetics.Thank you, Perry! I’ll definitely read through it.
-
chemicalmatt said:The silicone situation is currently acute. Back-orders of 8 -10 weeks not unusual. Prices 200% mark-up not uncommon either. Try A&B Specialty Silicones in Illinois for an alternate source, they use Bluestar (NV) base materials and do a fine job at low costs.
Thank you so much for the answer, Matt!
-
ozgirl said:There is some information in the link below about modifying viscosity and density to achieve a stable pearlescent.
Thank you so much! 🙂
-
chemicalmatt said:@tecnico3vinia, Synthalen W600 (acrylates copolymer from 3V Sigma) will do the job nicely once neutralized. No more separation anxiety.
Ultrez-10 will crash when your surfactants are added.Thank you for all the help, it is much appreciated!
-
ketchito said:@tecnico3vinia Yes, adding a rheology modifier that gives you high yield value will help suspend pearlizer. Also, achieving a good viscosity also helps prevent sedimentation of the pearlizer.
Thank you! I appreciate your help.
-
Fekher said:@tecnico3vinia may vitamine E can be alternative.
I agree! Thank you.
-
Syl said:It all depends… how fast you use the oils? How fresh they are and how susceptible they are to become rancid.
Rosemary antioxidant is used at less than .5%.
https://www.newdirectionsaromatics.com/products/preservatives/rosemary-antioxidant-co2-extract.htmlThank you!
-
mikethair said:We do the standard Stability Test at 45ºC for three months (in an incubator). Then our QC Manager uses retained samples for Real Time testing. Every month she will monitor and record data from some basic lab tests plus organoleptic tests. We now have data from 10+ years of testing.In all cases, the Rapid Stability testing has been 100% accurate. And for some of the brands we manufacture for, we have been able to extend the use-by-dates where necessary,
Thanks @mikethair! :smiley:
-
PhilGeis said:Consider 1 and 3 months at 45C as relevant to 1 and 2 year exp. dates. Wouldn’t presume anything in rapid aging predicts 3 years.
Get 1,2 and 3 year real time data. 1 and 2 confirm rapid aging and 3 is instructive to preservative systems even if product no longer on market.Also see how US FDA sees stability testing of OTC drugs.
Thank you @Ph@PhilGeis! 🙂
-
Thank you so much, @Perry !
-
SerMig1111 said:Hi, I also use tocopheryl acetate in my cosmetic formulations. Actually, it seems to be the most common way to add Vitamin E to a cosmetic. As described in the technical sheet of the known manufacturer BASF: “Vitamin E acetate is stable towards heat and oxygen, in contrast to Vitamine E alcohol (tocopherol)”. I think that’s the main reason.
After some research I can finally understand that Tocopheryl Acetate isn’t a great option to protect the formulation against oxidantion. Here’s some articles that I found that helped me understand it:
https://pubmed.ncbi.nlm.nih.gov/23600381/;
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1524-4725.2005.31724;
https://www.researchgate.net/publication/10607302_Comparison_of_antioxidant_activites_of_tocopherols_alone_and_in_pharmaceutical_formulations. -
Microformulation said:Tocopheryl Acetate will NOT protect your Formulation from oxidation. Again. these are some pretty broad and rudimentary subjects that one should explore on one’s own through credible (not online most likely) sources. Feed a man, teach them to fish and all that…
Did more research and finally understood it. Thanks
-
EVchem said:@tecnico3vinia - you are saying tocopheryl acetate “works” as an antioxidant in the formula, how are you evaluating that? Are you going based off appearance/smell, or do you test something quantitative like peroxide content?
Totally agree with Mark and micro here
Vitamin E Acetate is more stable than tocopherol, and that’s exactly why it is not a good antioxidant. In rough terms, antioxidants should be unstable- they take the hit of free radicals and react so that your other materials aren’t undergoing those chemical reactions, resulting in odor or color change.
As far as studies here’s a quick one
Thank you. Great article. It really helped me to understand why tocopheryl acetate isn’t a good option for formulations’ protection.
-
MarkBroussard said:Simply look at the chemical structure of the molecules Tocopherol and Tocopheryl Acetate.
In Tocopheryl Acetate, the only active site on the molecule Tocopherol that can readily serve as a proton donor to quench free radicals has been modified to the acetate form which is realatively unreactive or needs to first undergo a conversion to the tocopherol form to be active as a proton donor.
Yes, Tocopheryl Acetate may be more stable towards heat and oxygen than tocopherol, but the ability to serve as a proton donor is its whole essence in Tocopherol functioning as an antioxidant, so the modification of Tocopherol to Tocopheryl Acetate essentially disables Tocopherol’s ability to be a functional molecular antioxidant.
Thanks. I did more research on the topic and finally understood why Tocopheryl Acetate isn’t a good option for the formulation protection.
-
Microformulation said:
The main difference between dog and human products is that
ingredients in pet formulations in the U.S. require approval in line
with the Toxic Substances Control Act (TSCA). Also, dogs’ skin pH is
slightly higher, 7.0, and slightly less acidic than that of humans,
which is in the 6.0 range, according to Guiliano.
“Formulations or ingredients that you use on people or in products
meant for humans can also be used on your pets, you just have to confirm
with the regulatory requirements,” she said.https://www.basf.com/us/en/media/featured-articles/Products/pet-grooming.html
BASF has some great info for this sector.
My best advice, without getting too detailed, is to track your raw material costs closely. If you look at the market leaders you will see that sulfates are common in this sector. Be very careful and shrewd business wise before deciding that you can make a “Prestige Pet Care” product and position at a higher price point. Learn the market. I am aware of the spending trends in this market (we support our local Animal Shelter in various ways), but I have had so many clients learn this the hard way.
Essential Oils are advocated by some “natural” lines, but I would investigate the safety of any EO you utilize. There are some possibility’s for adverse reactions.
Thank you!
-
Pharma said:AFAIK pet products fall under the same legislation like dishwashing liquids, car-wash and laundry detergents, floor cleaners… So, you’ll easily find pet shampoos which don’t list any ingredients other than something like <5% anionic detergents and <15% non-ionic detergents… and I bet these also contain MIT, MCI, and other nasties ;( .Regarding pH of dog skin: They show higher deviation and a broader pH range than humans which depends on the pedigree, the climate they live in, and other factors such as indoors/outdoors, food, grooming etc.. You’ll find publications wherein they found quite acidic skin types and such with neutral one… lots of seemingly contradicting information if you don’t look closer. However, there’s one lesson to be learned: The more acidic the skin, the less issues and skin problems the dogs have. Much like with humans: acid protects from microbes .On the other hand: Pet shampoos show an even broader pH range due to lacking control, lacking knowledge, and different believes. I prefer baby shampoo for my dogs, they are safer and more reliable regarding honesty of ingredients.
Thanks!
-
MarkBroussard said:@tecnico3vinia:
I do a fair amount of development work in the Pet Care grooming products space. You are correct, formulate products for pets as though you are formulating products for human babies/infants and target end product pH in the range 7.0 to 7.5.
Yes, you are correct in that the FDA does not regulate pet grooming products such as Shampoos, etc. so manufacturers of pet grooming products do not have to adhere to the labeling requirements for human personal care products. So you will see pet grooming product labels with ingredients such as “Vegetable Surfactants” “Odor-Control Blend” and other such non-specific language, nor do the ingredient have to appear in any specific order, so with some pet grooming products it’s virtually impossible to decipher what all exactly is in the product.
The bottom line to answer your question is: Don’t put any ingredients in a pet grooming product that you would not put in a human personal care product … formulate for pets as though they are human babies with sensitive skin and at a higher pH (7.5ish) and you will be fine. And, always test your pet care concoctions on human skin before ever putting it on a pet. If it irritates human skin, it will be worse on pet skin. Finally, this is a price sensitive category so stick to inexpensive commodity ingredients.
Thank you!
-
Perry said:I would guess because the Spectrastat (Caprylhydroxamic Acid (and) Caprylyl Glycol (and) Glycerin) is partly acidic (anionic) which is interacting with the Cationic surfactants in your system. That changes that structure of the system and results in lower viscosity.
That makes sense. I will use Optiphen this time and see if this happens again.
-
ngarayeva001 said:You don’t have a primary emulsifier. Decyl Glycoside is used at a low % (which you did) to improve foam, CAPM is amphoteric surfactant used to promote mildness, you need a primary non-ionic or anionic emulsifier. If you want it to be “natural” coco-glucoside will work. Argan oil doesn’t do anything but it should be ok to add at 0.1% for claims.
Thank you, I’ll try it!
-
smok said:what do you imagine aragan oil doing in your shapoo?
Actually, nothing. It’s just for marketing.