How to suspend contained by fluid soap? I don't know the correct terminology, but, I made a shampoo for...

I don't know the correct terminology, but, I made a shampoo for my dog that I absolutely love. It's essentially gooey Dawn (for it's flea killing properties), essential oils, and a lotion underpinning (goats milk) and some coconut oil with ground oatmeal. Anyhow, the problem I am have is that everything keeps separating. What do I need to add on to make everything stay mixed and 'suspend' the oatmeal in the shampoo (kind of similar to exfoliants in body soaps and stuff)? The only conclusion I could come to be to mix in some melt/pour bases (glycerine?) and that would thicken it up. I considered necessary to ask everyone's opinion before trying this.

Thanks!!
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Answers:    You have need of an emulsifier to keep the water-based and oil-based chemicals in suspension. Lecithin might work, but it might also not be great for the dog if he have allergies (most lecithin is soy-based, and soy is one of the more common dog - and people - allergens).

The oatmeal is a different story. Most oatmeal soft soaps are made with pulverized oatmeal, not with flakes. Oatmeal flakes are purely too heavy to keep contained by solution.
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Try finding information on how to make homemade soaps and lotions. At one time, I wanted to swot how to make goats milk soap and found websites with directions.

Good Luck!!