Perhaps you’re seeing an uptick in grays lately—Brown notes many of her clients have experienced something similar, largely due to the increase in stress—and you’re looking for ways to slow the process down.
“Rosemary is an incredible gray and silvering ally. There have been some studies done where rosemary has shown the slowing down process of graying in the hair, which is pretty fascinating,” she says.
The powerful benefits of rosemary come from its incredible anti-inflammatory and antioxidant properties. Antioxidants act as a defense system in the body, fighting against free radicals that can stress cells and accelerate aging. And rosemary is near the top of the list for herbs with the most antioxidants.
See, when your scalp and hair follicles are experiencing oxidative stress, they gray faster. When you are able to keep your body from entering a state of oxidant imbalance, you’re less likely to experience early graying.
Source: https://www.mindbodygreen.com/articles/hair-care-tips-from-a-top-colorist-for-those-with-gray-hair