ozgirl
Forum Replies Created
-
Not sure what types of products you are formulating but also be aware of VOC regulations in California.
-
You will need to specify the type of product you are making and preferably provide a formulation or list of ingredients to get any useful suggestions.
-
That is very strange. Sorry I don’t have any other suggestions. Maybe try contacting the manufacturer.
-
How much does it fluctuate? Is it just the decimal place jumping back and forth between two numbers (eg. 4.1 to 4.2) or does it just take a long time to reach a reading.We have found that some some of our products with low levels of ethanol take a while to reach a stable pH reading. Does your witch hazel have any ethanol?
-
What type of product are you trying to make?
-
Join UL Prospector for plenty of free formulations. Also look at manufacturers websites (Dow, Stepan etc) for formulations.Ernest W Flick books (Advanced Cleaning Product Formulations) are a good starting place for institutional formulations.
-
In the current situation with corona virus the use of alcohol based hand sanitisers is preferred due to their effectiveness on this type of corona virus.Benzalkonium Chloride is not recommended by the CDC for hand hygiene for this particular type of virus. https://www.cdc.gov/coronavirus/2019-ncov/hcp/hand-hygiene.html
-
Is your carbopol compatible with cationic materials like the CHG? Many carbopols are not compatible with cationics.
-
The loophole is probably to do with the IFRA Transparency List.IFRA describes two types of ingredients used in fragrances - Fragrance ingredients and Functional ingredients.Functional ingredients are substances that are not used
to provide odor or malodor coverage, but which are essential for the
functionality or durability of a fragrance compound – such as an
antioxidant, preservative, diluent, solvent or color.Sodium thiosulfate is listed as being used in fragrances as a functional ingredient so if it is added to your fragrance to stop oxidation you can probably get away with listing the combination (fragrance + sodium thiosulfate) as “fragrance”. -
letsalcido said:The pH of my different experiments has been ~6.I am not sure if you used castille soap in all of your experiments but in the example formula shown you have. Soap is not stable at a pH of 6 and will break down into the fatty acids at this pH (there are many discussions in this forum regarding this if you search).My thoughts are that the cocoglucoside is helping to solubilise the fatty acids but not enough to maintain a clear solution.Try the formula without the soap and see if that helps.
-
Citric acid is not a preservative (although reducing pH can improve preservation in some circumstances) so you can reduce the citric acid. Only add enough citric acid to achieve your desired pH.If you want to use optiphen plus you may need to add a solubiliser such as Polysorbate 20.
-
Have you checked the activity of your raw material? Have you changed suppliers? As it is difficult to obtain Benzalkonium chloride at the moment it is possible that your supplier has also changed sources.
-
@chefjosette You will not be just given a formulation.If you have tried a formulation and need help please provide information on what you have tried and you may get some assistance. Even if it is based on a “recipe”.If you would like to hire someone to create a formulation for you https://chemistscorner.com/cosmeticsciencetalk/discussion/137/need-formulating-services-here-are-some-contacts#latestAlso check out this link (it is a little old but a good start)
-
Benzalkonium Chloride will be deactivated by anionic surfactants as they interact and may form a precipitate. You may be unable to see this due to the opaque nature of your formulation.The article you referenced takes advantage of this interaction between the two materials as a way of reducing irritation because they are bound to each other an unable to interact with the skin. The abstract does not mention anything about the efficacy of the combination as an antiseptic.
-
If you do not have the skills and knowledge to develop a simple manufacturing method you definitely should not be making a sanitiser.Depending on your location sanitisers may be regulated as drugs/medicines and need to be tested and registered.As @Belassi mentioned this type of sanitiser is not recommended for use against corona virus ( https://www.cdc.gov/coronavirus/2019-ncov/hcp/hand-hygiene-faq.html).
-
I noticed a couple of issues with your formula.SLS is anionic and is not compatible with the cationic benzalkonium chloride. Use a different preservative.Castor oil (or any oil) won’t help with the foaming performance of your hand wash in use.
-
Our sales have significantly increased (we sell hand sanitiser and hand wash as well as disinfectants and cleaning products) and like Bill we have also employed extra staff and moved to two shifts.We are just trying to social distance as best as possible and have stopped unnecessary visitors and sales reps on site.
-
This definitely sounds like a salt curve issue. It appears you have added too much sodium citrate. The salt curve for ALS is narrower than that for SLS/SLES and it is easy to add too much salt and reduce viscosity.I noticed that you are adding citric acid. Why not just reduce this to get the desired pH.Why are you using sodium citrate to adjust pH? It is not great for pH adjustment.
-
I am also in Australia.We have had the same issues with the supply of most ingredients used in hand sanitisers (alcohol and carbopol) and also with benzalkonium chloride, SLES and cocamidopropyl betaine.We have also had issues with packaging as a lot of it is manufactured in China.I am currently asking my suppliers for carbomers that are not good for alcohol hand gels to replace one we use in a hand cleanser with beads that we can currently not get due to the shortage.
-
For prevention of corona virus it is not recommended in a hand sanitiser.I think you will find that benzalkonium chloride is also in very short supply.
-
If you are planning on making this product as a method to combat Corona virus. Please DO NOT.Benzalkonium chloride has limited activity against this virus.
-
Belassi said:Unfortunately I am out of stock of Ultrez and guess what? I cannot find any anywhere. Alternatives please?You and the rest of the world I think. We are having major issues trying to obtain any polymer that can be used in Hand Sanitisers.I saw this video this morning from Belinda Carli at the institute of Personal Care Science and she uses Sepimax Zen. You might still be able to get that.
-
You could make a guess by looking at the usage ratesEuxyl K940 can be used at up to 1.5%.Euxyl PE9010 is recommended for use at 1%.So my initial estimate would be that the Benzyl Alcohol is the remaining 0.5% which is in the recommended usage range for this material.So the blend would be 2 parts PE9010 and 1 part Benzyl Alcohol.In any case you will need to test your product to sure it is adequately preserved.
-
No idea if it is ok for your sensitive skin. You need to test it.What is the pH? You cannot use soap under about pH 8.5 or it will break down. So the first thing I would recommend would be to remove the soap base. This should help with the clarity.The amount of citric acid seems high as does the fragrance.
-
USP / BP grade lanolin is generally recommended for cracked nipples when breastfeeding.Proceed with caution in this area as I remember a few years ago there was an FDA recall of a breastfeeding balm due to the use of a particular preservative that is not safe when ingested.