The Silk Eye Serum and this product are similar in formula, but designed for use with different applicators for different times of the day. The Silk Eye Serum is designed as a more water-based formula that can roll out of a steel eye roller tube. This requires less product to apply, and provides more of a cooling effect. It's designed for use during the day and in the morning.
The Eye Lifter is designed as a thicker, more hydrating cream formula with a pump applicator. This is for use in the evening before bed as an eye night cream.