Monday, August 8, 2011
A thought on small batch product making
There is a down side to using small amounts - it's really easy to mis-measure. For instance, let's say you're making a 200 gram batch of lotion and require 2% hydrolyzed oat protein (so a total of 4 grams of hydrolyzed oat protein in the product). All it takes is a little hand slip and you have 5 or 6 grams instead of 4. Not a huge deal - maybe you wanted a little extra? - but make sure you write it down in your trusty workshop notebook!
Where it does become a big deal is when you have a situation like this: If you have 10 ingredients and you end up with 0.1 gram extra for each ingredient, that's now an extra gram you have in your product. Again, not a huge issue (for the most part), but if you add 0.5 grams of each ingredient, then you have 5 grams extra, and that is a big deal for 200 grams of product (2.5% more than you expected).
This might mess up the emulsification or it might mess up the preservatives, which is one of the reasons I suggest using the maximum allowable preservative in our products. Or you might be making a product you love but can't recreate because of that tiny difference, so make sure you check your measurements twice and write everything down!
For more information on how we measure in bath and body products, click here! And for more information on why we use percentages, click here!