Are women over 50 sure they won't dye their hair?

Not necessarily. Whether women over 50 can use hair dye depends mainly on personal health conditions and product instructions. Generally speaking, it is okay to use hair dye as long as there are no abnormal skin symptoms, such as allergies or dermatitis. However, it is recommended to consult a doctor or professional hairdresser before use and choose a suitable product based on personal circumstances.