May 2026 in “International Journal of Health Management Review” This study found that the use of high pH chemical agents for hair straightening can cause significant damage to hair, including protein degradation and weakened fiber strength, and may lead to permanent scalp conditions like contact dermatitis and cicatricial alopecia.
In this study, a very low-calorie ketogenic diet significantly improved metabolic and hormonal profiles in obese men, but did not significantly enhance most semen parameters except for sperm motility.
This study evaluated the therapeutic response of an Afro-descendant patient with non-scarring alopecia after prolonged use of alkaline straighteners and mechanical traction, highlighting the susceptibility of Afro hair to chemical and mechanical damage due to its structure.
February 2024 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” This study demonstrated that using a mass spectrometry imaging technique, researchers were able to visualize the incorporation of argan, avocado, and coconut oils into hair fibers, suggesting their potential in cosmetic and alopecia treatments by confirming oil absorption and fiber modification.
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June 2022 in “Revista de la Asociación Colombiana de Dermatología y Cirugía Dermatológica” This review discusses cultural hair care practices for African American scalp health and recommends combining clinical evaluation with cultural knowledge, but reports no new research findings.