Why I Chose Soy Butter for My Lotion and Started Stocking It

I found soy butter because I was looking for a better feel in my lotion.

I was working on a lotion for my lotion class, and I wanted an emollient that would give me the softness and richness I was after without leaving the lotion feeling too greasy. Shea butter wasn't giving me the result I wanted. I had tried other things, too, but I still hadn't found that balance.

While browsing a supplier's offerings, I noticed they used soy butter as the base for their infusions. I remember thinking, “There must be a reason they're using this.”

So I ordered some. I put it into my lotion, and that was it: I had found the feel I had been looking for. It made the perfect lotion for me.

That experience is why I decided to stock soy butter at Wixy Soap. When an ingredient helps solve a problem in my own making, I want other makers to have the chance to try it, too.

What cosmetic soy butter is

The soy butter we're talking about here is a cosmetic ingredient for making products such as lotions and soap. The name can also appear on food products, so it helps to be clear about which one you are buying.

A common cosmetic soy butter is made from hydrogenated soybean oil. Hydrogenation changes the oil so it has a more solid, butter-like consistency. You will often see “Hydrogenated Soybean Oil” on the ingredient information.

For example, Hallstar identifies its refined soy butter by that INCI name and describes a soft material with good spreadability. INCI is the standard naming system used to identify cosmetic ingredients. Hallstar soy butter information

Check the full ingredient list and supplier specifications for the product you buy. Plain soy butter and botanical infusions may have different compositions, even when their common names sound similar.

What an emollient brings to a lotion

An emollient helps soften and smooth the skin. That is the role I was trying to fill when I started looking for an alternative for my lotion class.

COSMILE Europe lists hydrogenated soybean oil as a skin-conditioning emollient and a viscosity-controlling ingredient. In everyday language, that means it can contribute to skin softness and help influence a product's consistency. COSMILE ingredient information

Those are useful jobs, but they don't tell you everything about how a finished lotion will feel. A lotion is a combination of ingredients, and each part affects the result.

Think about the difference between a thin lotion you can pour and a thicker cream you scoop from a jar. Both can contain emollients, yet the experience of applying them is quite different.

For my lotion, soy butter helped me reach the balance I wanted. The result felt right to me, which is much more meaningful than choosing an ingredient simply because it sounds rich or luxurious.

Using soy butter in soap

Soy butter can also be used in soap making. Crafter's Choice lists cold process soap among the applications for its hydrogenated soybean oil product and provides usage guidance for that specific material. Crafter's Choice soy butter information

The reason to consider it in soap is a little different from the reason to use it in lotion. In a lotion, you're working with an emollient as part of an emulsion. In cold process soap, the fats react with lye during saponification to form soap.

That means you should assess soy butter as part of your soap's overall oil blend. The proportions and the particular material you buy will influence the finished bar.

A bar is used with water and rinsed away. Its lather, firmness, and feel during washing matter. Those qualities need to be judged in the finished, properly cured soap rather than predicted from the feel of the raw butter.

Start with the supplier's information for your exact ingredient. If you change the fats in a soap recipe, recalculate the lye using appropriate saponification information. A lye calculator works from the selected oils, their weights, and the chosen superfat.

For hydrogenated soybean oil, make sure the calculator entry or calculation method matches the material. If you cannot identify the correct information, check with the supplier before making the batch.

Then give the soap time to cure and compare it thoughtfully. Does it suit the kind of bar you want to make? Do you like using it? Those answers are more helpful than expecting one butter to do every job in a recipe.

Trying it in your own lotion

If my story sounds familiar because you are also searching for a different lotion feel, approach soy butter as a small formulation experiment.

Choose a reliable formula and check your supplier's recommended use level and processing instructions. If the formula allows a substitution, make a small batch and record exactly what you changed.

Try to keep the comparison manageable. When you change several oils, the butter, and the emulsifier at once, it becomes difficult to tell which change made the difference.

Pay attention to the lotion at several points: when you spread it, after you rub it in, and a little later. The first impression and the lasting finish may tell you different things.

Write down what you notice in plain language. “Too much drag,” “comfortable finish,” or “richer than I wanted” can be more useful than a vague note saying “nice.”

A good texture is one part of a good formula

A finished lotion also needs to remain stable and be appropriately preserved. A pleasant feel alone doesn't establish either of those things.

Preservatives help reduce microbial contamination and keep cosmetic products suitable for use. The European Commission explains their role in preventing spoilage and protecting products during storage and use. European Commission information on preservatives

When changing a lotion formula, keep the full formulation requirements in view, including the emulsifier, preservation system, processing instructions, and finished-product testing.

Why I decided to stock soy butter

Soy butter earned its place at Wixy Soap because I tried it, liked the result, and wanted to share that option with other makers. It's easy to overlook when you're used to reaching for the same familiar butters. If you're searching for a different feel in your lotion, soy butter may be worth a try.

And if you'd like some hands-on help, join me for a lotion making class at Wixy Soap. Finding a formula you love is one of the best parts of making your own.