They’re not harmful, but they don’t make for pretty (or good smelling) soap. What’s more, all of the store-bought oils except one exhibited terrible DOS after only a month! DOS is a common soapmaking acronym and it stands for “Dreaded Orange Spots.” Old or unpure oils can go rancid in soap, producing the tiny orange spots that give DOS its name. As you can see, some of the tests did some interesting things. Here are the results of the tests after unmolding. All bottles listed “Olive Oil” as the only ingredient on their labels. We tested store brands as well as private labels, and every kind of olive oil from ‘virgin’ to ‘extra virgin’ to ‘light’. We soaped at the same temperature for all 10 batches and soaped all 10 batches over a 2 day period to ensure as close as the same temperature and humidity conditions as possible for gel phase and cure time. batches, had no water discounting and used a 5% superfat. Each recipe was comprised of 100% olive oil, made in 1 lb. These Olive Oil were small sizes, purchased off of retail store shelves at a local grocery store and a chain grocery store (generally, 8 to 16 ounce sizes the smallest each brand had to offer). We tested 10 olive oils total, including our own Pure Olive Oil and Pomace Olive Oil. Many sopamaking oils can be found in grocery store aisles, and after awhile it begins to beg the question - can you really use store bought oils in your soaps? While this may seem like an easy, convenient and inexpensive option, we did a little research to find out.
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