For the nourishing scalp treatment, here’s what we recommend: You can apply it before shampooing, starting about 30 minutes before your wash (like a pre-poo treatment). If your scalp handles it well and doesn’t feel itchy or uncomfortable, you can slowly work your way up to leaving it on overnight. Just make sure to protect your pillow with a towel or wrap your hair. We don’t recommend applying it every single day—instead, 1 to 2 times a week is usually enough. And try to avoid leaving it on for more than 24 hours max, even if it feels nice, because oils left too long can start to clog the scalp or disrupt the balance of your skin. So just start slow, keep it close to your shampoo at first, and see how your scalp feels! If it’s happy, you can keep it longer next time