While using a product that has recently expired might not seem ideal, it doesn't necessarily mean that the peel will be ineffective. Here are some considerations: Effectiveness: The efficacy of the peel might be slightly reduced if the active ingredients have degraded after the expiration date. However, a month past expiration is not an extensive period, so the impact might be minimal. Safety: Generally, products like chemical peels have a buffer period beyond their expiration date during which they remain safe. However, it's important to monitor your skin for any unusual reactions, such as excessive redness or irritation, and contact your provider if you experience any concerns. Consult Your Provider: It's a good idea to reach out to the professional who performed the peel. They can provide more specific guidance based on their experience with the product and any observations they made during your treatment. Future Considerations: For future treatments, ensure that products used are within their expiration dates to maximize both safety and effectiveness. If you have any concerns about the results or your skin's reaction, consulting with your skincare professional can provide peace of mind and further advice.