What is the shelf life of RXBAR Layers? 8 months from the date they are made. Find the exact Best By date printed on the left edge of your RXBAR Layers wrapper. Shop RXBAR Layers See Also: What's different about RXBAR Layers? What are the ingredients in RXBAR Layers? Related articles Are RX A.M. Oats organic? What is the shelf life of RXBARs? What are the ingredients in RXBAR Layers? What size are RXBAR Layers? Can I eat RXBAR products past their best by date?