Both products feature natural celery seed extract as their main active ingredient, which is clinically proven to inhibit the growth of the fungus that causes dandruff. The oil provides immediate relief from itching and irritation, while preventing dandruff from returning and restoring balance and health to the scalp. Dry Dandruff Shampoo fights dry dandruff while relieving itching and irritation. In the first few weeks of use, it significantly reduces flaking and discomfort, and also leaves hair significantly smoother and hydrated. In clinical trials, 76% of volunteers confirmed that it soothed itching and discomfort, and 92% found their hair significantly smoother. Both products offer effective solutions for anyone dealing with dandruff and its associated symptoms.