This is a sample set of Kiehl's popular retinol serum. I received it at a directly managed store. ◇ DS RTN Renewing Serum (Serum) 10mL x 1 4mL x 2 The product will be packaged in a plastic bag and shipped directly in an envelope. (In some cases, cushioning material may be used.) ★ Brand new, unused, and stored at home. Shipping is planned via standard mail. Depending on the timing of acceptance (e.g., if it falls on a weekend), it may take several days for delivery. I am flexible with changes to the shipping method, so please feel free to let me know via message. * Changes to the shipping method may require an additional fee. Thank you very much.