Start with a clean, dry scalp. Put the hat on, adjust it until it sits snug, press the power button and pick your mode. That's it. It switches itself off after 20 minutes.

Absolutely. It's fully cordless, so you can make breakfast, answer emails or unwind on the couch while it runs.

Follow the schedule in the included manual. Most people find it easiest to stay consistent by using it at the same time each day, like after the morning coffee or before bed.

Up to 4.5 hours per full charge, which is about 13 sessions. Recharge it with the included USB cable.

L0 gives steady, continuous light. L1 pulses at 10Hz and L2 at 40Hz. All three use the same red and near-infrared LEDs, so go with whichever feels best to you.

It has an adjustable, unisex fit made for a wide range of head sizes. A snug fit keeps the LEDs close to your scalp.

Wear it on a clean, dry scalp, because oils and serums can leave a layer between the light and your skin. If you use a topical treatment, ask your doctor or pharmacist when to apply it.

Everyone's different, and red light is a routine you build over months, not days. Snap a photo in the same lighting each month so you can track your own progress.

Zavra uses low-power LEDs (1W output) and shuts off automatically after 20 minutes. Don't look directly into the LEDs. If you're pregnant, have a medical condition, or take medication that increases light sensitivity, check with your doctor first.

Orders are dispatched within 1–2 days and typically arrive within 5–12 days.

Once your order ships, you'll get an email with your tracking number. You can also enter it on our Track Order page at any time.

You can return your hat within 30 days of delivery. Just contact us and we'll walk you through the return.