May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.
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October 2008 in “Journal der Deutschen Dermatologischen Gesellschaft” Anti-cancer treatments can cause reversible hair loss, skin sensitivity, pigmentation changes, nail damage, and skin reactions, with a need for more research on managing these side effects.
June 2024 in “International Journal For Multidisciplinary Research” Herbal powder shampoo is effective, safe, and beneficial for various hair needs.