January 2012 in “한국미용학회지” In this study, applying hair conditioner during the middle of a permanent wave operation resulted in better tensile strength, hydration, and cuticle health compared to other application times.
September 2011 in “European journal of cancer” This study found that applying hair conditioner during a permanent wave process in the middle rather than early or late improves tensile strength, hydration, and maintains healthier hair cuticle structure.
29 citations
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August 2011 in “PubMed” This study found that selected polymeric pretreatments on hair can significantly reduce breakage and protect against thermal damage from hot flat irons by maintaining cuticle integrity and moisture.
December 2015 in “Dermatologic Surgery” Double trichophytic closure effectively repairs thin scalp scars, reducing financial burden.
25 citations
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May 2008 in “Journal of cosmetic dermatology” This study found that adding certain conditioning agents, including jojoba oil and lauryl PEG/PPG‐18/18 methicone, to ammonium thioglycolate straightening emulsions protected Afro-ethnic hair from protein loss and improved resistance to breakage.
1 citations
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December 2015 in “Dermatologic Surgery” Double trichophytic closure effectively treats thin scalp scars and reduces patient costs.
November 2004 in “Hair transplant forum international” This article discusses approaches to minimize mechanical damage during hair restoration surgery to improve micrograft viability and outcomes, but it reports no new results.
19 citations
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April 2021 in “Journal of Cosmetic Dermatology” This study found that a hair care treatment using integral silk proteins and linseed-derived polysaccharides effectively protected and repaired bleached and colored hair swatches, significantly improving their resistance, luster, and reducing structural damage after chemical treatments.
5 citations
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September 2016 in “Dermatologic Therapy” This paper reports three cases of hair transplantation using Feily's method, which showed unusual long-lasting dark areas on the scalp, suggesting more than 24 hours of caution might be needed to prevent necrosis.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that DNA-damaged hair follicle stem cells in mouse models do not show typical senescent markers but are dynamically expelled to maintain tissue health and prevent hair loss.
12 citations
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July 2015 in “British journal of dermatology/British journal of dermatology, Supplement” This study found that mechanical damage from grooming and environmental factors contributes to crack formation and eventual breakage in African-American hair, highlighting the need for continuous care.
January 2012 in “Jounal of The Korean Society of cosmetology” Applying conditioner mid-treatment reduces hair damage during perms.
May 2026 in “Jurnal Pendidikan Kimia Fisika dan Biologi” This study found that rebonding hair straightening treatments visibly damage the hair cuticle, causing surface erosion and cracks, as shown through Scanning Electron Microscopy analysis.
February 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study analyzed how professional hairstyling practices cause thermal damage to human hair, focusing on heat exposure and product use, and proposed a protocol for minimizing damage with heat protection strategies and optimal temperature recommendations.
2 citations
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October 2007 in “PubMed” In this study, researchers observed that more hairs are extracted from the follicle with intact root bulbs than breakage occurring along the fiber in treated versus untreated hair.
February 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The study analyzed how professional hairstyling practices, such as excessive heat and product use, cause thermal damage to hair, and it proposed a protocol that includes heat protection strategies and optimal temperature ranges to minimize this damage for hairstylists.
October 2012 in “한국미용학회지” This study suggests that after perm treatments, sufficient application of keratin and ceramide after middle rinsing enhances curl formation while considering hair health.
17 citations
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July 2019 in “Scientific reports” This study investigated lipid loss in hair caused by surfactants and found that surface and internal modifications can significantly protect different lipids from depletion, with internal modification preventing 52.0 to 81.3% of lipids in certain groups.
September 2009 in “Hair transplant forum international” This article discusses the ongoing debates among hair restoration surgeons on incision methods and presents no new research findings.
33 citations
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March 2006 in “Seminars in cutaneous medicine and surgery” This article illustrates various hair shaft defects and suggests that dermatologists can diagnose most of them using light microscopy and polarization without needing advanced imaging techniques.
3 citations
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January 2010 Refined open donor harvesting techniques can reduce hair follicle damage in hair restoration surgery.
4 citations
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April 2000 in “Plastic and Reconstructive Surgery” The document suggests fixing common hair transplant issues by combining artistic principles with plug reduction, recycling, and additional micrograft transplantation, while also potentially using arnica to help with post-operative swelling.
This review discusses complications of frizzy hair syndrome and emphasizes the importance of precautionary measures, but it reports no new research findings.
2 citations
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January 2015 in “Sen'i Gakkaishi” This study found that washing hair after reduction in a permanent waving process allows for significant reformation of disulfide cross-links, enhancing the strength and elasticity of hair fibers.
January 2019 in “Journal of Drug Delivery and Therapeutics” This paper discusses approaches to prevent Telogen Effluvium, a common form of hair fall, by modifying lifestyle factors as recommended in the Unani System of Medicine, which suggests maintaining balance in six essential elements for health before resorting to drug treatments.
August 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” This study found that using natural polyphenol cross-linkers like tannic acid and green tea extract during perm treatments improved perming efficiency, wave maintenance, and hair protection compared to a control group.
July 2025 in “Journal of Oncology Research and Therapy” This study found that the effectiveness of scalp cooling in preventing chemotherapy-induced alopecia in early-stage breast cancer patients depends on the integrity of the follicular pigmentary unit, particularly consistent melanosome quantity.
This chapter explores the causes and management of hair damage, highlighting effective repair strategies such as protein and lipid replenishment with keratin peptides and citric acid, and identifies social media's role in consumer preferences for protective and conditioning products.
March 2023 in “Asian journal of beauty & cosmetology” This study found that applying a keratin solution improved tensile strength, reduced absorbance, and increased gloss in damaged hair compared to untreated hair.