“When used correctly, color-depositing shampoos can revive faded color, add richness, or neutralize unwanted tones,” says ...

Stress, fright, environmental factors and medical issues are all rumored to play a part. Experts weigh in.

We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. Here’s our process. It is normal for hair color to change as people age.