Question: Doubling, quadrupling, and dodecahexing!

Tiffany writes:  I love creating concoctions for myself and others, but I have been stumped on one thing that I hope you can answer.   I know that we have to weigh our ingredients to get the most accurate measure, and I have done that.  My question is once I have weighed my ingredients and converted those weights to volumes can I just double, triple, quadruple etc a batch if I want to create more of it?  I know you can do that in food recipes but I did not know if it would be the same with cosmetics.

Yep! That's why we do things in percentages - if we have 10% of an ingredient, it could be 10 grams, 100 grams, or 1000 grams! I have a little column on my recipe sheet so I can do the math to increase the batch size to whatever size I want. And I haven't noticed any weird things happening when I increase the batch size dramatically (say to make 2 kilograms of lotion, so 20 times my normal recipe) the way you might with a food recipe!

The nice thing is that we can make up big batches of our products and save them to use later on! (Click here for that post!) That's what I'm planning for my holiday time (I'm off until January 5th, so let the experimenting begin!) - I'm making up big batches of products like body wash, shampoo and conditioner bars, bubble bath, and body butter so I'll have enough to take me through until June!

For more information on converting recipes from percentages to weights, click here.