making deodorants, Alaska asks: I looked up Herbarie and was wondering if the AquaEm or Cromollient SCE would work in place of the water soluble esters? Thanks!
In the original recipe, I'm suggesting cyclomethicone - an oil soluble silicone - or Crodomol PMP - a water soluble ester. So yes, we can substitute one water soluble ester for another.
First, check the INCI name of the ingredient you've found at the Herbarie. I don't think it's proper name is AquaEm. If we look, its INCI is PEG-6 Caprylic/Capric Glycerides (and) Polyglyceryl 6 Dioleate, an ester with a proper name of Caprol Micro Express. (Okay, it's mostly Caprol Micro Express or CME. Close enough for our purposes!)
Can you use Cromollient SCE or Caprol Micro Express as a water soluble emollient in this recipe? Yes, you can. Is it a good idea? Yes, because both bring a lovely emolliency to the product. CME isn't a sticky feeling ingredient, so that's a great addition to a deodorant. And Cromollient SCE is a mildness enhancer, which is a great addition as well.
So the final answer to your question is yes, you could substitute either of those water soluble esters for the original water soluble ester.
How do I modify a recipe when I add or substract something? madux asks: I have trouble getting specific amount in my shampoo recipe, i wanted to get 250 ml but ended with about 220 ml of shampoo. I wonder if that is because of the powdered ingredients... Could you explain to me why that happened and how to fix it?
This is due to the density of your ingredients. Density is measured by is the idea that 1 gram of water is 1 ml. This makes it easy to figure out how much water you have when you have 1 gram or how much 1 ml of water will weigh. Here's the thing, though. Not everything is 1 ml = 1 gram. For instance, glycerin is heavier than water, while oils and essential oils are lighter.
If we have 100 grams of water, it will measure 100 ml. If we have 90 grams of oil, it might measure 100 ml. If we have 80 to 90 grams of essential oils, they might measure 100 ml. If we have 100 grams of glycerin, it'll be less than 100 ml. Every ingredient has a different weight to volume ratio. So it's easy to see that volume and weight don't measure up together.
This is, as I've mentioned many times before, we don't use volume measurements because using 5 ml of something like glycerin isn't the same as using 5 grams of glycerin. If we do everything by weighted measurements, we know we're actually getting 5% of something and 10% of something else. The original commenter didn't do this,
In your recipe, you have glycerin and cocamidopropyl betaine and a lot of other ingredients that are quite thick, meaning that 1 gram of that ingredient isn't going to measure out to 1 ml. Because of this, you'll have a lower volume than you expected.
*Thanks, p, for the catch! I always get this backwards!!!
How do I figure out the volume of a recipe?
Weight vs. volume