While you can use Laduora Duo without the brand’s hair serum pods, they do add extra benefits (plus, you get two free Boost pods when you buy the device anyway!). Simply plop the dermatologist-developed serum pods into the middle of the hair device and brush it along your hair as normal. Choose the Boost pods if you want thicker, stronger hair, the Awaken pods to remove product buildup and reduce dry, itchy, and flaky scalp, or the Balance pods to repair hair damage and restore your scalp’s natural pH.