July 14, 2026 — A recent incident report has brought to light a concerning safety issue involving Kirkland Size 1 diapers, manufactured by Costco Wholesale. A 1-month-old infant reportedly experienced severe skin irritation and distress when the inner lining of the diapers stuck to their skin upon becoming wet, leading to redness and a risk of skin injury.
Product Details
Product: Kirkland Size 1
Incident Overview
The incident occurred with Kirkland Size 1 diapers purchased from a Costco store in Bellingham, WA, in May 2026. According to the report, immediately upon the diaper becoming wet, the inner lining began to stick to the baby’s sensitive skin. This adhesion caused significant redness and posed a risk of skin injury due to the forceful tugging required to remove the diaper. The affected 1-month-old baby reportedly scream-cried until the diaper was removed, indicating considerable pain and discomfort. Efforts to mitigate the issue with barrier creams were unsuccessful, suggesting a fundamental problem with the diaper material itself when exposed to moisture.
Safety Concerns
The reported issue with Kirkland Size 1 diapers presents several significant safety concerns for infants:
- Immediate Dangers: The primary immediate danger is acute skin irritation, redness, and potential for skin abrasion or tearing due when the diaper sticks and needs to be removed. This can cause significant pain and distress for a newborn, leading to prolonged crying and discomfort.
- Long-Term Risks: Repeated exposure to such an irritant or repeated skin pulling could lead to chronic diaper rash, skin breakdown, or secondary infections if the skin barrier is compromised. For infants, consistent discomfort can also impact feeding and sleep patterns.
- Who Might Be Affected: This issue primarily affects infants using Kirkland Size 1 diapers, particularly those with delicate or sensitive skin. Parents and caregivers are also directly impacted by the distress of their child and the need to find alternative, safe diapering solutions.
- Property Damage Potential: While not directly related to property damage, the inability to effectively use the product as intended could lead to waste and increased financial burden on consumers seeking safer alternatives.
What Consumers Should Do
If you are currently using or have purchased Kirkland Size 1 diapers, especially those from Costco in May 2026, please take the following actions:
- Immediate Steps: Discontinue use of any Kirkland Size 1 diapers that exhibit stickiness, redness, or cause distress to your infant upon becoming wet. If your baby has experienced skin irritation, redness, or injury, consult with a pediatrician or healthcare provider immediately.
- How to Check: Carefully inspect any unused Kirkland Size 1 diapers. If you notice an unusual texture, stickiness when lightly moistened, or if your infant shows any signs of discomfort or skin reaction immediately after a diaper becomes wet, stop using them.
- Prevention Measures: Until this issue is fully addressed, consider using alternative diaper brands. Always monitor your infant closely for signs of discomfort or skin reactions when introducing any new product or if you suspect an issue with a current product.
- Reporting Procedures: It is crucial to report any similar incidents. Contact Costco Wholesale directly, and file an incident report with the U.S. Consumer Product Safety Commission (CPSC) at www.cpsc.gov.
Manufacturer’s Response
No manufacturer response has been provided in the incident report.
Legal Help Available
If you or a loved one has been injured by a defective product or suffered property damage due to a product malfunction, you may be entitled to compensation. The experienced product liability attorneys at Farzan Law understand the complexities of defective product cases and can help you navigate the legal process. Farzan Law is a California based Personal Injury law firm focusing on protecting the rights of those wrongfully injured.
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Contact us today for a free consultation: 424-325-3112
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Note: This information is based on incident reports provided by the U.S. Consumer Product Safety Commission. If you find information that is incorrect, please contact us immediately so we can correct the post to reflect accurate information.
Disclaimer: The information provided in this post is not intended to be legal or medical advice. This article is based on publicly available incident reports. The incidents mentioned have not necessarily been independently verified or adjudicated.

