It's hard to say it's unregulated.
First of all, certain things are required on the packaging. Those are regulations.
The ingredients list is one of those things. It's supposed to reflect what is inside. If it doesn't, that's fraud.
If you want to ensure that every container accurately reflects its ingredients, you'll have to have FDA inspectors present at every production facility, just like USDA inspectors are present at every slaughterhouse.
You'll be sure there's aloe in the aloe gel. The only problem is, it will cost so much to manufacture that only megacorps will be able to sell any. Small businesses will be shut out. And the products will probably cost twice as much.
What we need are more studies like these, to catch the fraudsters-- not more regulations.