No, however, if you are doing a soak-off gel manicure we at least recommend you used our primer "Commit" to the tips and free edge of the nail. Something to keep in mind is that every single client is different. Some may need a primer, while others may not depending on their body chemistry. If you are using Multi-Flex as an enhancement and would like to fill your clients, then you will need to use Commit. We recommend 2 coats of Commit before gel application for enhancements. If your client tends to lift, then you can do two coats of Commit and cure the second layer of primer for a few seconds to warm it up. This will make it tackier and will adhere the gel to the product better, reducing changes of them lifting.