If you’ve ever used an oil-based facial cleansant or facial gel, you’ve probably noticed a difference in the way they feel on your face.

But, you might be surprised to learn that they’re not all that different when it comes to how they interact with your skin.

They can be similar, and you might even be able to find some that actually work.

But why?

The answer, according to Dr. Lisa Brown of the University of Arizona, lies in how the ingredients interact.

“What you see is what you get,” Brown told ABC News.

“The oil and the protein molecules interact to create the makeup of the product.

That’s how the product reacts to your skin.”

While it’s not always the case that oil-free facial cleansants are the same as oil-and-water cleansants, there are plenty of similarities, Brown said.

“There’s a lot of similarities,” she said.

Brown noted that some products use a combination of oil and water, which can cause a chemical reaction on your skin, and others use the same oil- and water mixture, but different ingredients, but the same chemical reaction.

“That’s why there’s some overlap in terms of the chemical reactions,” she added.

While oils can cause more problems on your body, Brown pointed out that they can also be used as a cleansing agent.

“They have their place,” she explained.

“Some people use them for acne control.

They also can be used to cleanse the skin and prevent the buildup of dead skin cells and other skin conditions.

And that’s a really good use case for oil-less cleansers.”

Brown said that the most important thing to remember is that oil cleansers are not the same thing as moisturizers, which is why it’s important to know what type of product you’re using.

“If you’re just going to be using a cleanser and using moisturizers together, you should be thinking about a face oil cleanser,” she told ABC.

“Because oil is so much easier to work with.”

Brown added that it’s also important to consider the ingredient mix.

“In my experience, you can use a lot more oils and a lot less water than you can with moisturizers,” she stressed.

“I’m a big believer in using less oil than you need to use to be able use that oil.”

Brown recommends that you use a water-based cleanser or moisturizer, rather than a oil- or water-containing cleanser.

“You’re actually making the product worse because you’re mixing it up so much that it can’t really work,” she noted.

Brown said it’s best to stick to a single brand of facial cleanses for your whole face and not mix them up in any way.

Brown added to ABC News that there are also a number of other products on the market that are also similar to oil-containing products, including green facial cleansing and natural hair cleansers.

“It’s really important to be aware of what you’re doing,” Brown said of your skin’s natural oils.

“When you’re talking about skin care products, it’s really helpful to look at what they’re made from and how it interacts with your natural oils.” 

Read more about natural products and how to clean your skin at ABC News