“As someone in their 50s, I must color my hair every three weeks to avoid the sparkle of gray hair,” says pro hairstylist and salon owner Wendy Burns. “I sympathize with my clients who just can’t do ...

As hair changes with age, coloring it at home requires a gentler, more thoughtful approach. Senior hair is often finer, drier, and more fragile, and it may also be more resistant to color—especially ...