Overview

• Spain’s El Periódico promotes a green tea, sage and rosemary rinse said to restore hair color after three consecutive days of use, with effects lasting only until new gray growth appears.
• That guide urges a 24-hour steep, one-hour application and a rinse, plus a patch test and dermatologist consultation for people with scalp conditions or hair loss.
• The U.S. National Cancer Institute is cited for findings that some substances used in certain chemical dyes are carcinogenic in animals, a concern fueling interest in plant-based alternatives.
• Argentina’s El Cronista details an avocado seed and cinnamon preparation applied weekly for gradual darkening, while noting that results vary by hair type and frequency of use.
• LA Gaceta reiterates that aging drives graying, with reports linking stress biology (norepinephrine effects on follicle stem cells) and possible vitamin B12 deficiency to earlier loss of pigment.