Hi idiego,
Effects are often felt in the first few days, if not immediately following your first use.
Initially, you may notice an improvement and shift in your relaxation levels, as if you are drifting, or as if time is stretched or elongated.
It's not uncommon to feel tingles or slight pressures on the body or in the head as your brain begins to register the entrainment technology and begin to emulate it.
For many, benefits can manifest in the first few weeks. We recommended maintaining a journal so that you can track your progress. You can use the forum as your journal (as many of our customers do) and post your updates so we can share in your process and give you any help.
-Tiffany