What the research says
Small studies have found that pink noise played during deep sleep can increase slow-wave activity — the brain waves of the deepest, most restorative sleep — and, in some participants, improve next-day memory. Other work reports that steady pink noise helps people fall asleep faster and wake less. The evidence is early but consistently positive, and pink noise carries no real downside to trying.
How to use pink noise for sleep
Keep the volume gentle — pink noise is meant to sit quietly under your awareness. Enable Waves for a soft, rain-like ebb and flow, and set the Sleep Timer to fade the sound out after you have drifted off.