Lia, SLS is manufactured from coconut oil. It is a sulfated form, though, which makes it drying and irritating. It can make your scalp and skin too dry, and overproduce oils.
Which is why I try to stick with SOAPS.
I did not know any health food stores were trying to sell it -- probably with phthalate or other fragrance sensitivities?
Technically you could call it coconut oil, but it comes from the tree, not the coconut. At least that was what I understood when I checked it out a lot of years ago. (This is not the oil talked about so far in this thread. This is the oil that sodium laurel sulfate comes from.)
And the health food store details:
I knew the manager of a health food store and he told me they sell shampoos that don't have detergent in them. The shampoos use oil instead. I asked "So they don't foam?" Didn't get an answer to that.
Then when I stopped by the store I checked the ingredients on a shampoo bottle. There was no detergent listed, but "coconut oil extract" was listed. It seemed obvious to me that they were just giving a health food spin to a cheap detergent. I didn't check any farther so could be wrong.
Business is business. I might do the same if it sold.
I lived with a few health food extremists and they began to irk me. They might be stocking shelves in a health food store because grade 8 was too much for them, but that didn't throttle down the urge to give advice. Just about any health problem you could name right up to cancer, could be cured by just about anything in the store. The pharmacy companies didn't want you to know about it so they could make more money. etc etc
So yes, if rewriting the name on that ingredient (and put a few flowers on the bottle) can get them to pay twice as much for it, that sounds like a smart business move.
The little problem is that it takes a bit more time if you really do want to understand what you are doing, and not just blindly follow some kind of 'in' thing.
That part was a lot of years ago too, so I don't know if health food stores still do that sort of stuff.