January 2005 in “Journal of Cutaneous Pathology” The hair erector muscle is involved in various skin conditions and disorders.
October 2025 in “Annals of Medicine and Surgery” Retinoids may improve hair growth in androgenic alopecia when used with other treatments.
45 citations
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May 2022 in “Biomedicines” Analyzing follicular fluid can help predict and improve outcomes for women with PCOS undergoing fertility treatments.
82 citations
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May 2009 in “BJCP. British journal of clinical pharmacology/British journal of clinical pharmacology” Caffeine penetrates human skin in lab tests similarly to real-life conditions, but actual skin use is still essential for accurate results.
405 citations
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January 2004 in “Journal of Investigative Dermatology” Hair follicle size and distribution vary significantly across different body sites.