Both devices use clinically proven light therapy to promote bloodflow and boost growth of healthier, fuller hair. Here are the key comparisons:

- The helmet comes in medium (54cm-58.9cm) or large (59cm-63.5cm); the headband is one adjustable size.

- The helmet treats the whole head; the headband focuses on the hairline.

- The helmet features 120 red (620nm-660nm) LEDs; the headband has LEDs + 32 lasers.

- The helmet is bulkier, whereas the headband is suitable for frequent travellers.

- The headband features Veritace, an end-to-end production & testing system that guarantees precise LEDs. The Helmet is made using the same ethos, however only the headband has an NFC card to view every stage of testing.

- Both are used for 10 minutes daily.