All five serums can be used in conjunction with each other. A little goes a long way.
If you are layering all products, it is recommended that they are used in the order shown in the starter kit. The Retouch starter kit contains all five serums below at a value price and includes a luxurious palette. 

15ml Retouch Hyaluronic Base Serum
15ml Retouch Lift
15ml Retouch Lines
15ml Retouch Eyes
15ml Retouch Highlight

Retouch Intro Kit

AU$289.00 Regular Price
AU$173.40Sale Price