Yes, for the Advanced Retinol + Ferulic Perfectly Dosed Treatment Peel, the color of the wipe will vary. While the wipe itself is solid white, the solution applied to the wipe may vary from light yellow to deeper brown. Retinol as an ingredient has a slight yellow tint that may deepen and present from light amber to deeper brown. All of our products are thoroughly lab tested for stability and efficacy, and this variation is an expected result and does not indicate a loss in product performance.