Costco Baby Wipes Lawsuit: What It Claims — And How To Think About PFAS Without Panic

Headlines about PFAS can feel alarming, especially when they involve products we use on babies. When a lawsuit mentions “toxic chemicals,” it’s easy to assume that something dangerous has been discovered — and that parents need to act immediately.

But lawsuits raise questions. They don’t answer them.

This post explains a Kirkland baby wipes controversy. Specifically, what the Costco baby wipes lawsuit actually alleges, what the PFAS numbers mean in a real-world context, and why PFAS contamination is not something consumers can realistically shop around.

The goal here isn’t to dismiss concerns — it’s to put them in perspective, so you can make decisions without unnecessary fear or stress.

Is There A Lawsuit Involving Costco Baby Wipes?

Yes, there is a lawsuit involving Costco baby wipes.

In 2024, Larisa Bullard and Mila Corrigan filed a class action lawsuit against Costco Wholesale Corp. and Nice-Pak Products Inc. alleging that Kirkland Signature baby wipes contain per- and polyfluorinated substances (PFAS).

The lawsuit has gone through multiple stages:

• An earlier version of the complaint was dismissed.
• An amended complaint was later allowed to proceed.
• The court has not ruled that the wipes are unsafe.
• No regulatory agency has issued a violation or a Kirkland baby wipes recall.

At this stage, the lawsuit remains an allegation — not a safety determination (source, source, and source).

What Does The Kirkland Baby Wipes Lawsuit Actually Claim?

The lawsuit claims that private testing detected PFAS in Costco baby wipes and argues that this presence conflicts with consumer expectations about the product.

What the lawsuit does not establish is just as important.

First, it does not prove harm to babies.

Second, it does not show intentional PFAS use.

Third, it does not compare Kirkland wipes to other brands in terms of PFAS levels.

Last, it does not result in a regulatory safety ruling.

In other words, the lawsuit focuses on detection and disclosure — not demonstrated injury or unique risk.

Are PFAS Intentionally Added To Baby Wipes?

No, PFAS are not typically added intentionally to baby wipes. When they appear, it’s almost always as environmental contamination, not a formulation choice.

PFAS are widespread because they exist in air, water, soil, manufacturing environments, and raw materials used across industries (source).

Because of this background pollution, trace contamination can show up even when a product is not designed to contain PFAS. Contamination is not the same thing as deliberate inclusion — and treating it that way creates confusion. On the other hand, the concern is valid because PFAS chemicals can potentially cause health issues, including thyroid disease, stunted development, and weakened immune system among other things (source).

What The PFAS Numbers In The Lawsuit Actually Mean

According to the original 2024 Kirkland baby wipes lawsuit, private testing found the following amount of PFAS in Costco wipes – 3.7 parts per billion (ppb) (or 0.0037 parts per million (ppm)).

Further, the 2025 amended complaint alleged that independent testing of the wipes revealed three different types of PFAS, as follows:

• PFPrA: 3.6 ppb (0.0036 ppm)
• PMPA: 0.15 ppb (0.00015 ppm)
• R-EVE:0.040 ppb (0.00004 ppm)
• Combined: 3.79 ppb (0.00379 ppm)

Let’s put these numbers into context.

First off, emerging European Chemicals Agency (ECHA) proposals and newly adopted EU Packaging and Packaging Waste Regulation (PPWR) suggest the following specific thresholds:

• Any single PFAS: 25 ppb (0.025 ppm)
• Total PFAS (including polymers): 50 ppm (source and source).

As you can see, these thresholds are much higher than the combined 3.79 ppb (0.00379 ppm) of PFAS allegedly revealed in Costco wipes. This means that the wipes would be legal under the ECHA standards. I believe this is significant because the ECHA standards are typically stricter than those in the United States.

Additionally, OEKO-TEX’s limit for total fluorine (an indicator for PFAS) is 100 ppm for textiles across multiple certification programs (source).

That means the levels cited in the lawsuit are much smaller than any safety thresholds. Detection alone does not equate meaningful exposure — and raw numbers without context can be deeply misleading.

Why PFAS Contamination Is Not A Practical Basis For Shopping Decisions

This is where theory and real life diverge.

As consumers, we typically don’t have access to routine PFAS testing data. Plus, raw numbers associated with PFAS testing can be unnecessarily misleading without the proper context.  Testing methods vary. Results depend on lab equipment, how samples are handled, and what and how is measured. And contamination levels can change from batch to batch.

Trying to shop based on alleged trace PFAS contamination leads to constant second-guessing, conflicting decisions, and stress without actionable clarity.

This is not how I recommend choosing baby products. Fixating on what we cannot verify doesn’t improve safety — it just increases anxiety.

Does This Lawsuit Mean Parents Should Stop Using Costco Baby Wipes?

No. A lawsuit alone is not a reason to panic or immediately stop using a product.

If you’re currently using Kirkland baby wipes, there’s no evidence you’ve done something wrong. Importantly, you don’t need to switch out of fear. In my opinion, it’s a good idea to pay attention to how your baby’s skin responds and make changes only if your baby has a skin reaction or if you prefer baby wipes with safer ingredients.

If thinking about PFAS stresses you out, it’s reasonable to choose a different option — not because of proven harm, but because peace of mind matters.

What You Can Control When Choosing Baby Wipes

Instead of chasing invisible contaminants, focus on what is within your control:

• ingredient transparency
• avoiding known skin irritants
• fragrance-free formula
• wipe material and texture, and
• use frequency.

These factors have a more direct impact on skin tolerance and daily use than alleged trace environmental contamination.

In other words, knowing Kirkland wipes ingredients will be of bigger help to you. You can see my review of Kirkland Signature Baby Wipes’ ingredients here.

For other options of baby wipes, turn to my Baby Wipes Rating List which focuses on ingredients of more than 70 wet wipes and will simplify your decision making.

Final Takeaway On The Costco Baby Wipes Lawsuit

In conclusion, PFAS contamination is widespread and usually unintentional. The levels cited in the Kirkland wipes lawsuit are extremely low, and lawsuits themselves are not safety verdicts.

You don’t need to make decisions based on fear — or chase perfection in an imperfect world.

Focus on what you can control. In this case, you can control which wipes to use on your baby by choosing wipes based on their ingredients. This is why I created my Baby Wipes Rating List – to help you make purchasing decisions without stress or overwhelm.

If you’d like extra help choosing safe products, my free emails offer expert tips, exclusive resources, and encouragement to stay focused on your health journey.