One of The Ordinary's three main hair heroes is the Natural Moisturizing Factors + HA for Scalp.This scalp serum uses your favorite skin care ingredients (hello, hyaluronic acid) to provide long-lasting hydration, avoid irritation, and enable your strongest strands to grow. It is fueled by the idea that a healthy scalp equates to healthy hair. Ultimately, your scalp is really an extension of your facial and body skin.

Before using, give it a good shake. Once a day, preferably right before bed, massage a few drops deeply into a dry, clean scalp. This mixture acts as a leave-in remedy. After applying, avoid washing your scalp or hair. If irritation develops, rinse off, stop using, and see a doctor. Use on intact skin only as prescribed. Patch testing is recommended before use.