September 2023 in “Clinical, cosmetic and investigational dermatology” In this study, the researchers found that a 28-day topical treatment with a postbiotic ferment complex notably altered the scalp microbiome in women with sensitive scalps, increasing certain bacterial species and decreasing others, while also reportedly alleviating symptoms of sensitive skin syndrome in all participants.
80 citations
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March 2008 in “Contact Dermatitis” This study found that scalp sensitivity frequently occurs in the French population and is associated with various symptoms and triggers, differing from facial skin sensitivity.
1 citations
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December 2022 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” This review discusses the characteristics, triggers, and individualized treatment options for sensitive scalp but presents no new research findings.
11 citations
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January 2014 in “International Journal of Trichology” This study observed that patients using Erol(®) Energy shampoo and tonic reported improved symptoms of scalp irritation and rated product tolerance as good to excellent.
7 citations
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January 2023 in “Skin Appendage Disorders” This review discusses the characteristics, potential triggers, and challenges in diagnosing and treating sensitive scalp, reporting no new clinical results, and noting the need for further investigation.
1 citations
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January 2022 in “Dermatology Reports” This study reported that sensitive scalp symptoms, including trichodynia, are frequently found in hair loss patients, particularly among those with telogen effluvium and alopecia areata.
November 2023 in “Dermatologic therapy” The scalp serum reduced scalp discomfort and symptoms without affecting skin moisture loss.
July 2023 in “Cosmoderma” 
April 2018 in “Journal of Investigative Dermatology” This study found that sensitive scalp is characterized by increased pH levels, redness, altered sebum composition, and a disrupted microbiome, suggesting these features could inform treatment approaches.
22 citations
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May 2002 in “Skin Research and Technology” This study found that in male androgenetic alopecia, the contrast enhanced phototrichogram technique was superior in detecting changes in hair density and thickness compared to other methods.
3 citations
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August 2024 in “Cosmetics” This study found that a 12-week regimen of a botanical supplement significantly improved skin and scalp health in women exposed to high pollution, enhancing factors like skin radiance, moisturization, and reducing wrinkle depth and scalp redness compared to a placebo.
28 citations
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November 2017 in “Skin appendage disorders” This paper proposes a systematic approach to evaluating scalp itch using the SCALLP acronym and highlights the importance of classifying cases based on the presence of dermatological lesions and hair loss, but it reports no new clinical findings.
July 2026 in “Clinical Cosmetic and Investigational Dermatology” In this cross-sectional study of healthy urban women in Shanghai, poor sleep quality and elevated perceived stress were linked to various self-reported dermatological issues and clinical signs, reinforcing the potential relevance of psychological factors in skin health.
February 1990 in “PubMed” This study observed that hirsute females displayed increased S-phase hair bulb cells and decreased G0/1-phase cells compared to healthy females, with a strong correlation between S-phase percentages and DHEA-S levels.
10 citations
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December 2010 in “British Journal of Dermatology” This study reports two distinct patterns of hair changes in postmenopausal women, linking diffuse generalized scalp hair loss to older age and frontal hair loss to higher facial hair scores and younger age.
12 citations
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May 2021 in “Clinical Interventions in Aging” This study found that men with androgenetic alopecia have different scalp biophysical characteristics in androgen-sensitive areas compared to non-sensitive areas and healthy controls.
124 citations
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April 1992 in “Journal of Endocrinology/Journal of endocrinology” This study observed that cells from androgen-sensitive areas like the beard and scrotum showed higher androgen receptor levels compared to those from non-balding scalp areas, supporting the role of dermal papilla in follicle growth responses to androgens.
11 citations
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November 2016 in “Clinical and Experimental Dermatology” This study describes the first known case of erosive pustular dermatosis of the scalp triggered by a burn from hair bleaching, which resolved completely with superpotent topical corticosteroids.
April 2025 in “Brazilian Journal of Hair Health” This report from Tangle Teezer and TRI Princeton indicates that their Extra Gentle brush reduces hair breakage by up to 39%, offering a therapeutic experience for users with fragile scalps.
April 2018 in “Journal of Investigative Dermatology” This study demonstrated that in genetic mouse models, the calcium sensor Stim1, not Stim2, is essential for sweat secretion in sweat glands.
About 17% of people in France have dandruff, and those with dandruff are more likely to have sensitive and itchy scalps.
2 citations
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September 2022 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” This article discusses the sensitive skin condition of the scalp, its clinical manifestations, triggers, and individualized treatment options, but reports no new clinical results.
January 2008 in “Journal of The American Academy of Dermatology” Hair loss affects 20% of people, more in men and those over 35, and is often associated with a sensitive scalp.
18 citations
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July 2022 in “Frontiers in Immunology” This review discusses the potential impact of volatile organic compound exposure on the onset and progression of autoimmune diseases and reports no new experimental findings.
7 citations
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January 2015 in “Hair therapy & transplantation” This review discusses the impact of air pollution on hair loss and sensitive scalp syndrome, evaluating possible causes and management strategies, but reports no new clinical results.
1 citations
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March 2020 in “Current Science” In this survey-based study, researchers reported a high prevalence of hair loss among subjects in Delhi and the National Capital Region and noted widespread unawareness of its dietary, hormonal, genetic, and environmental causes.
September 2025 in “Ukrainian Journal of Dermatology Venerology Cosmetology” In this case study, a patient with pseudopelades of Brocq was treated with a peripheral vasodilator, B vitamins, and corticosteroid lotion, leading to halted hair loss and improved clinical symptoms over seven weeks.
September 2025 in “Scientific periodicals of Ukraine” This study reports on a 46-year-old patient with pseudopelades of Brocq, highlighting the effectiveness of early diagnosis and treatment in preventing atrophy and controlling hair loss, as positive clinical outcomes were noted after prescribed therapy.
January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers explored the formulation and effectiveness of herbal shampoos, finding that these products offer a gentler hair care alternative that promotes hair health and addresses scalp issues, while also encouraging sustainable beauty practices and consumer awareness.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” This summary from the source provides an overview of the Soulflower brand, noting their focus on natural, cruelty-free, and handcrafted beauty products using plant-based ingredients, and highlights the availability of a promo code HPK50 for discounts, encouraging a shift towards cleaner self-care routines without chemicals.