Susan (Swift Crafty Monkey) can be overwhelming at times since she likes to try all kinds of unusual ingredients, but that's also part of her reputation -- the willingness to test new stuff and be honest about the results. I trust her and the Making Skincare website over most other online resources. Humblebee and Brambleberry and the Majestic Mountain Sage blog are other good resources, but sometimes their lack of understanding about the science really shows.
In another recent thread about hair conditioner (basically a lotion that's used on hair), someone complained that she didn't want to make conditioner formulations (aka recipes) with unusual or "not natural" ingredients. I think my slightly edited reply to her also applies to this thread --
You can make a super simple hair conditioner or body lotion with a blend of BTMS emulsifier (or e-wax or other all-in-one emulsifier), water, and a decent broad spectrum preservative. That's all. If you want simple, this is the place to start.
When you get more comfortable making a super simple product like this, you can add stuff that makes the product even more pleasant and effective. That's what the other stuff is all about.
The cetyl alcohol or stearic acid in Swift's ingredient list is a thickener that modifies the texture and helps the emulsion stay more stable. Cetyl alcohol also provides additional conditioning properties for the hair and skin. Adding either thickener is the first thing I'd do to upgrade.
The oils and butters add fat to the product. You can use oils only or butters only or both. Oils add shine and smoothness to the hair and soothe and protect the skin. The butters, because they're solid at room temp, also provide some thickening power to the product.
All of the other ingredients in Swift's recipe/formulation do nice things for hair (or skin if talking about a body lotion). These additives make it easier to comb the hair and reduce frizz (the -cones), soothe and reduce itchiness of the scalp and strengthen the hair shaft (panthenol), add moisture to the hair (honeyquat), reduce static in the hair (centrimonium chloride), etc. If you don't want them or don't have the budget to get them, don't use them.
Never omit the preservative, however. It may seem to be a small ingredient, but it's vital.
I recommend Anne L. Watson's book Simple Lotionmaking as a good, inexpensive book to get started making safe and effective lotions.
Source:
Issues with Hair Conditioner Bar recipe