Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
October 2007 in “European Neuropsychopharmacology” October 2025 in “Frontiers in Toxicology” A new method effectively predicts estrogen-related health effects for early screening.
May 2026 in “Brazilian Journal of Hair Health” Bleaching damages hair the most, while dyes improve combability but still cause protein loss.
January 2024 in “Wiadomości Lekarskie” Shifting attention can reduce physical pain.
2 citations
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January 1999 in “Dermatology” 
October 2025 in “Clinical Cosmetic and Investigational Dermatology” SP treatment improves hair health and moisture retention better than water treatment.
2 citations
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September 2000 in “International Journal of Retail & Distribution Management” The document concludes that understanding consumer-brand relationships is key for marketing and that perceived quality helps national brands maintain higher prices than store brands.
People have mixed feelings about rosemary, Sudocream, and antidandruff shampoo, with both positive and negative views.
5 citations
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November 2022 in “Molecular Neurobiology” Melatonin may protect inner ear cells from damage by reducing cell death and oxidative stress, potentially treating sudden hearing loss.