ozgirl
Forum Replies Created
-
The amount of a preservative used is a percentage of the total formulation. Usage is not based on the amount of water.Check with your supplier on recommended usage rates. -
There are many posts about this topic on this forum. Just try using the search function.
-
I don’t think that the guidelines for hydrotrope usage are relevant when using it in a solid conditioner.The starting formulations for this product in a solid conditioner use around 65% Danox HC 30 and 15% cetearyl alcohol with shea butter and other emollient additives.20% of water soluble ingredients seems very high for a solid conditioner. I would try reducing these.
-
Here is some information regarding Australian regulations that might be useful.
As others have mentioned it is always a good idea to label your products in case of allergy.
-
BTMS is a drier feeling emulsifier. Can you change your emulsifier?
-
It is just a code used by LOreal to identify the formulation.This website explains it better.https://incibeauty.com/blog/74-la-verite-sur-le-code-f-i-l-en-cosmetique (The article is in French but you can easily translate it)
-
I don’t think that the issue is due to stirring speed but more likely incompatibility of your emulsifier with high electrolyte levels. Did you check with your supplier on this?A combination of Steareth-2 and Steareth-20 are often used in antiperspirants. For example this Dove Antiperspirant Roll-On Deodorant OriginalWater, Aluminum Chlorohydrate, Helianthus Annuus (Sunflower) Seed Oil, Glycerin. Steareth-2, Fragrance, Steareth-20, Tocopheryl Acetate.
-
Is your thickener suitable for use with antiperspirants? The example given in the Simugel FL datasheet for electrolyte resistance shows data for 0.4 and 0.6% NaCl. This is significantly lower than 8% to 20% Aluminium Chlorhydrate suggesting that your thickener is the problem.It is more likely that the acrylate polymers are crashing out rather than your aluminium chlorohydrate.
-
You will find that the product is mostly petrolatum with smaller amounts of the other ingredients.This might helpThe amount of menthol seems to be very high and is probably causing the burning sensation.
-
Do you have water in your formula? Aluminium Chlorohydrate is very soluble in water. It is often sold as a 50% solution.Here is a starting formula that might be of interest
-
Benzalkonium chloride is cationic and is not compatible with anionic surfactants such as SLES. You need to use non-ionic or cationic ingredients only. If you eliminate the Benzalkonium chloride you will not have an antibacterial hand cleanser as you are removing the main active ingredient.Lactic acid can also be used as an antibacterial active and is probably what is giving the better result in the other sample you tested.Mel = honeyThere are a number of antibacterial hand wash formulations on UL Prospector that are good starting points.
-
I like Ethylhexylglycerin as a deodorant active.Here is a good starting point for deodorant formulations. https://www.personalcaremagazine.com/formulations-by-category/19/deodorants-anti-perspirants
-
Is the pH changing over time? It could be due to the urea.
-
Start by looking at SDS for the product you are trying to recreate.There are a few car wash starting formulations on UL Prospector and I believe Dow also have a number of Auto Care formulations.
-
Here is some information regarding formulating with SLMI that might help you with the SCMI.
-
Long lasting freshness/fragrance in fabric softeners generally comes from encapsulated fragrances.We did some trials with CPL Aromas Aromacore fragrances a few years ago which worked really well. We decided not to go ahead with the project because our test group didn’t really like the fragrance remaining on the fabric.
-
I have seen this paneling occur with some vegetable oils, esters and essential oils in HDPE bottles.Most vegetable oils (for eating) are sold in glass, metal or PET.This is why it is very important to test packaging in your stability trial.
-
What is the active concentration of your SLES? Your concentration of surfactant actives may be too low in your formulation.This calculator may help.
-
Without percentages it is hard to tell but if you are trying to solubilise salicylic acid you might be using a lot of Zemea and PG and these can contribute to that feeling.
-
I think the stigma comes from the “natural must be better” crowd.Fragrances can be tailored to contain very few/no allergen/irritant ingredients whereas with essential oils you get what is extracted from the plant and can’t really change that (usually quite a few allergens).We get a lot of enquiries from customer looking for products that don’t contains lavender essential oil because despite this oil being promoted as gentle and calming there are many people who are allergic to some of its components (eg. linalool).
-
What surfactants are you using? Quaternary ammonium compounds are incompatible with anionic surfactants.
-
Just a hint for small quantities: Most dip tubes have the “v” shape on both ends. So you can remove the dip tube and cut it (with scissors or similar) and insert the cut end into the pump leaving you with the “v” shape on the other end.If you are ordering larger quantities you can often ask the supplier to trim the tubes to the correct length.
-
Try a different colour and fragrance. Some fragrances and colours are just not stable. Ask your supplier for suggestions based on your ingredients and pH.The Liquitint dyes are good for laundry detergents.
-
This thread might be of interest.
-
I worked on thickening an acidic industrial cleaner and we trialled a POLYOX WSR (can’t remember the number) that worked quite well. It might be worth investigating this option as some grades of the the POLYOX products can be used in cosmetics.