It turns out that a key factor in hair color loss happens to be the buildup of hydrogen peroxide in the scalp and hair follicles. As we age, our bodies become less able to neutralize that hydrogen peroxide, which interferes with an enzyme that is responsible for producing the pigment in hair. The graying begins when the synthesis of melanin (the natural pigment that gives hair its color) is disrupted.
Another recent study in Nature Medicine suggests that sun damage may very well speed up the graying of hair. The study found that when UV exposure damaged skin, melanin-producing stem cells migrated upward to the skin to produce protective pigment (a tan) but abandoned their position in the hair follicle.
While there are many other factors that can contribute to graying hair (genetics, ethnicity, stress etc.), these studies suggest there are steps you can take to slow down or minimize graying hair:
Methionine Sulfoxide Reductase (MSR), an ingredient found in our RevivHair Stimulating Serum, may help prevent hydrogen peroxide buildup and, according to the first study, act on tyrosinase to help prevent the loss of hair color. Two other included ingredients (also mentioned in the study) may help: Catalase and Superoxide Dismutase (SOD).
Additionally, wearing a hat or applying a UV protection product for the hair (more specifically, the scalp) whenever you're outside, may help as well. Wearing a hat to shield UV damage is something we should be doing anyway!