Acidic sandy clay damages archaeological hair the most, while dry conditions preserve but make it brittle; silicone oil can help keep the hair flexible.
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January 2018 in “Scientific Reports” Mycorrhiza helps trifoliate orange grow better roots and handle drought.
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April 2022 in “Biophysical Journal” Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.
April 2025 in “Cosmetics” Clinopodium bolivianum essential oil boosts antioxidant activity in hair products, especially in combing cream.
October 2023 in “Animal production science” Vitamin A deficiency changes cattle hair structure, while pregnancy may improve it, suggesting hair can indicate cattle health.