112 citations
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September 1968 in “PubMed” Hot comb use can cause permanent hair loss on the scalp.
107 citations
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September 1968 in “Archives of Dermatology” Using hot combs can cause permanent hair loss on the scalp's crown.
54 citations
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July 1967 in “Science” Decomposed tritiated thymidine is less accurate for DNA tracing, and hair changes can indicate malnutrition.
47 citations
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September 1997 in “Journal of Pharmaceutical Sciences” Properly formulated large molecules can reach active levels at the hair bulb.
47 citations
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July 1967 in “Science” Not eating enough protein can cause hair roots to shrink and lose color, and hair to become thinner.