do comedogenic ingredients give you pimples and acne

“Gio, this cream has a drop of [insert known comedogenic ingredient]. Will it give me pimples?”

Look, I get it. If you’ve got acne-prone skin, the last thing you want to do is slather on something that has even the remotest possibility of giving you another breakout.

But NO ONE can look at an ingredient list and predict if it’ll give you pimples. It doesn’t work like that. And while we’re on the subject, all those comedogenicity lists you find online (I’ve posted one too πŸ˜‰ ) aren’t accurate either.

Truth bomb: just because an ingredient is comedogenic, it doesn’t mean it will give you pimples. (That’s why my list comes with a few warnings, FYI).

So, if sticking to non-comedenic products isn’t the answer, how can you tell when a product is trouble? Here’s the truth about comedogenic ingredients and what to really be on the lookout for when you skincare shop for your acne-prone skin:

What Does Non-Comedogenic Mean?

“Comedo” is how scientists call a “clogged pore.” And as you well know, clogged pores can lead to all sorts of acne: blackheads, whiteheads, pimples…

So “comedogenic” simply means “more likely to clog your pores and give you acne.”

You do want to stay away from anything that makes your pores more likely to get clogged.  But figuring out what that is, isn’t as simple as checking a “comedogenic list” online. *sighs*

The Problems With Non-Comedogenic Claims

Where do I start?

Problem #1: Non-Comedogenic Claims Aren’t Regulated

The term non-comedogenic isn’t regulated in any way.

No laws determine what ingredients can’t be used in non-comedogenic products.

No organisation (official or independent) sets standards for what non-comedogenic means and verifies they aren’t violated.

Heck, we don’t even have reliable studies that tell us what ingredients are comedogenic or not!

You know what that means? Brands can literally put ANYTHING they want in a cream and label it non-comedogenic.

Are you gonna trust that?!

Related: Beauty Myth Busted: What Non-Comedogenic Really Means

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Problem #2: Science Doesn’t Know Which Ingredients Are Comedogenic Or Not

Aren’t scientists researching this?! WTH are those lazy buggers doing?!

Yes, we have studies on the comedogenicity of ingredients. Those “comedogenic lists” you find online are based on them. They’re just not accurate.

Here’s the deal: the first studies on the comedogenicity of ingredients were done with the Rabbit Ear Model. Put simply, researchers slathered a high dose of a ingredient on a rabbit’s ear every day for weeks to see what would give them acne.

You see the problem now? We’re not rabbits. Rabbit’s ears are way more prone than our skin to “overreact to comedogenic materials.” 

Plus, as another study points out, rabbits didn’t have acne in the first place. We don’t know if these ingredients react the same way on human inflammatory acne (i.e., on inflamed skin colonised by P.Acnes).

Here’s something else that’ll blow your mind: when comedogenic ingredients are tested on real humans, they turn out not to be comedogenic at all

Mind you, this study has limitations, too. The researchers only tested ingredients considered “mildly or moderately comedogenic.” Had they tested the “highly comedogenic” ones, the results may have been a little different!

In short: science can’t tell us yet what ingredients are comedogenic or not. πŸ™

Problem #3: It’s The Dose That Makes The Poison

Not only humans aren’t rabbits, we also don’t bathe in skincare creams.

Scientists love to use incredibly highly concentrations of an ingredient to test if it’ll give you pimples. But most creams only use a sprinkle of them.

How can that give you the same results?!

Even if the offender is high on the ingredient list, how often are you using it? Every day? Once a week?

This stuff matters. Small, occasional doses aren’t as dangerous as big, frequent ones. Period.

Problem #4: We’re All Different

Even if scientists designed better studies  (you know, small amounts on acne-prone skin and all that jazz), it’s unlikely the results would be universal. You know why?

Cos we’re all different! Everyone’s skin is different. Everyone’s lifestyle habits are different. Everyone’s skincare routines are different.

You know what that means? What works for one person may not work for another.

There are just too many factors that contribute to acne – skin type, diet, hormones, stress, climate etc – no one can tell whether a single skincare product or ingredient can aggravate it or not.

How To Use Comedogenicity Lists

Having said all this, I wouldn’t call comedogenicity lists useless. They shouldn’t be taken at face value but they can be a useful guide – if you know how to use them.

Here are a few things to keep in mind:

The Bottom Line

Sorry to be the bearer of bad news, but you can’t tell by looking at the ingredient list if a product will give you acne or not. The best you can do is trust your skin and avoid products with high concentrations of highly comedogenic ingredients.