"Binaural beats" sounds technical enough to be convincing on its own, so it's worth slowing down and explaining what the term actually means before evaluating any product built around it.
The Basic Mechanism
When you listen to two slightly different tones through headphones — one in each ear — your brain perceives a third, phantom rhythm equal to the difference between the two frequencies. Play 210 Hz in one ear and 200 Hz in the other, and your brain perceives a pulsing 10 Hz beat, even though no single tone at that frequency actually exists in the recording. This is called a binaural beat, and it's a real, measurable auditory phenomenon, not a myth.
What "Brainwave Entrainment" Claims
The theory behind entrainment audio is that your brain's electrical activity will gradually synchronize toward the frequency of that perceived beat — a concept sometimes called the "frequency following response." Since different brainwave frequency ranges are associated with different mental states (broadly: delta with deep sleep, theta with light meditation, alpha with relaxed focus, beta with alert thinking), the pitch goes, you can nudge your mental state by choosing the right beat frequency.
What research actually shows
- Multiple peer-reviewed studies have found associations between binaural beat listening and reduced self-reported anxiety, particularly in clinical and pre-procedure settings.
- Some EEG studies do show measurable shifts in brainwave activity during binaural beat exposure, though effect sizes are often modest and inconsistent across individuals.
- Research on binaural beats for memory, focus, and creativity is more mixed, with several studies finding no significant effect beyond what quiet listening or standard music already provides.
Where the evidence stops
- No peer-reviewed research links binaural beats to physical changes in the pineal gland specifically, let alone to financial or "manifestation" outcomes.
- Much of the existing research uses small sample sizes, and results don't always replicate across labs — a common limitation in this field, not unique to any one product.
- The wellness industry frequently cites this research more confidently than the original papers actually support — a gap worth watching for whenever a product cites "science" without linking the actual study.
The beat itself is real. What your brain does with it — and what that means for your bank account — is where the evidence runs out.
So Is It Worth Using?
Taken on its own terms — as a relaxation and meditation aid — binaural or entrainment-style audio is a reasonably well-supported, low-risk practice. Many people find it genuinely useful as a focusing ritual, similar to how a metronome helps a musician keep time. The caution is specifically around products that stretch that legitimate technique into claims about gland "activation" or direct financial outcomes, which current science does not support.
If you're evaluating a specific product that uses this kind of audio, a good rule of thumb: separate the listening experience (which can be pleasant and calming on its own merit) from the marketing narrative wrapped around it (which is often aspirational rather than clinical).
For the historical side of where the "third eye" framing used in these products actually comes from, see our companion piece:
→ Read: The Third Eye in History — From Egypt to Modern Neuroscience