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Glossary Preservatives

substances added to prevent spoilage and extend shelf life

Preservatives are substances added to products like food, cosmetics, and pharmaceuticals to prevent spoilage and extend shelf life by inhibiting the growth of microorganisms such as bacteria, fungi, and mold. In the context of hair care products, preservatives help maintain the product's efficacy and safety over time, ensuring that ingredients remain stable and effective without becoming contaminated.

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research Presentation, impact and prevention of chemotherapy-induced hair loss: scalp cooling potentials and limitations

62 citations , February 2011 in “Expert review of dermatology”

This review discusses the incidence, reversibility, and impact of chemotherapy-induced alopecia and concludes that scalp cooling is the most effective prevention method in most cases, though some questions remain.

research Preservation of Fertility in Transgender Men on Long-Term Testosterone Therapy: A Systematic Review of Oocyte Retrieval Outcomes During and After Exogenous Androgen Exposure

16 citations , June 2022 in “Transgender Health”

This review suggests that oocyte retrieval may be viable for transgender men on testosterone therapy, with potentially manageable effects on fertility preservation without requiring extensive hormone suspension.

Preservation of Melanoblasts in White Hair Follicles of Segmental Vitiligo Lesions: A Preliminary Study

research Preservation of melanoblasts of white hair follicles of segmental vitiligo lesions: A preliminary study

7 citations , May 2010 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology”

This preliminary study observed that melanoblasts are preserved in the white hair follicles of segmental vitiligo lesions.

Preservation of Sebaceous Glands and Peroxisome Proliferator-Activated Receptor Gamma Expression in Central Centrifugal Cicatricial Alopecia

research Preservation of sebaceous glands and peroxisome proliferator-activated receptor gamma expression in central centrifugal cicatricial alopecia

1 citations , July 2018 in “Journal of The American Academy of Dermatology”

This study observed that sebaceous glands were preserved in some patients with central centrifugal cicatricial alopecia, suggesting early gland loss may not be a key feature of the condition.

research Preservation of a specialized phenotype of dermal papilla cells of a human hair follicle under cultivation conditions

July 2017 in “Biology bulletin/Biology bulletin of the Russian Academy of Sciences”

This study found that cultivating dermal papilla cells in spheroids or with valproic acid most effectively preserves their phenotype in vitro, compared to a monolayer culture with BMP6 and vitamin D3, which only produces a short-term effect.

research Preservation of stem cells in androgenetic alopecia

October 2017 in “Journal of The European Academy of Dermatology and Venereology”

Stem cells preservation in AGA could be a potential therapy, but more cases needed.

Presentation of a Meningioma in a Transwoman After Nine Years of Cyproterone Acetate and Estradiol Intake: Case Report and Literature Review

research Presentation of a meningioma in a transwoman after nine years of cyproterone acetate and estradiol intake: case report and literature review

34 citations , November 2017 in “Gynecological Endocrinology”

This report describes a case of meningioma in a transwoman treated long-term with estradiol and cyproterone acetate, suggesting possible concern over female sex steroids and meningioma risk.

research Presentation and Management of Cutaneous Manifestations of COVID-19

11 citations , December 2020 in “Journal of Drugs in Dermatology”

This study reported that COVID-19 skin manifestations, such as exanthema and chilblains, varied in timing but resolved positively with proper treatment.

research Presentation, diagnosis, and management options of lipedematous alopecia

9 citations , December 2018 in “JAAD case reports”

This study details the characteristics of lipedematous alopecia and lipedematous scalp, two rare scalp conditions, suggesting they may represent different stages of the same disorder, with lipedematous scalp lacking the hair loss seen in lipedematous alopecia.

research Presentation1.PPTX

December 2021

This study found that GPC1 is a significant regulator of angiogenesis in human dermal microvascular endothelial cells, suggesting its potential as a target for alopecia research.

research Presentation1_BBS7–SHH Signaling Activity Regulates Primary Cilia for Periodontal Homeostasis.pdf

December 2021 in “Figshare”

This study found that BBS7 downregulation in occlusal hypofunctional periodontal ligament tissue is associated with reduced Sonic hedgehog signaling activity, potentially playing a key role in maintaining PDL homeostasis.

research Facial preservation following extreme mummification: Shrunken heads

10 citations , May 2018 in “Forensic Science International”

This study concluded that the process of mummification disfigures facial features, making identification challenging, but commercial shrunken heads retain more defining features compared to ceremonial ones.

research Late presentation of myotonic dystrophy

5 citations , January 1998 in “Clinical and experimental dermatology”

This article discusses the late presentation of myotonic dystrophy but reports no new clinical findings.

research Eyelash Preservation During Chemotherapy and Topical Prostaglandin Therapy

3 citations , July 2010 in “Archives of internal medicine”

A woman kept her eyelashes during chemotherapy possibly because of her glaucoma eye drops.

research Socket Preservation Following Extraction A Review Article

1 citations , December 2022 in “Zenodo (CERN European Organization for Nuclear Research)”

This article reviews various aspects of dental socket healing after tooth extraction, including grafting techniques and their role in dental implant placement, and reports no new clinical results.

Uncommon Presentation of Pityriasis Rubra Pilaris of the Scalp: Clinical, Trichoscopic, and Histopathologic Features and Review of the Literature

research Uncommon Presentation of Pityriasis Rubra Pilaris of the Scalp: Clinical, Trichoscopic, and Histopathologic Features and Review of the Literature

November 2024 in “Medicina”

This case report details a unique instance of pityriasis rubra pilaris affecting only the scalp, highlighting novel trichoscopic features and emphasizing the importance of recognizing this rare presentation for improved diagnosis and treatment.

research Flap Advancement Technique for Scalp Hair Preservation in Massive Cutis Verticis Gyrata

January 2024 in “Indian Journal of Plastic Surgery/Indian journal of plastic surgery”

This case report describes a flap advancement technique following skin expansion as a successful method to address primary essential cutis verticis gyrata, preserving hair growth and improving cosmetic outcomes.

Case Presentation: Catastrophic Decrease in Measured Oxygen Saturation Associated with Venovenous Bypass During Liver Transplantation

research Case presentation: Catastrophic decrease in measured oxygen saturation associated with venoveno bypass during liver transplantation

July 1999 in “Liver transplantation and surgery”

Oxygen levels can drop during liver transplant if bypass pressures are too high, but other reasons should be checked first.

research Late presentation of biotinidase deficiency with acute visual loss and gait disturbance

31 citations , December 1997 in “Developmental Medicine & Child Neurology”

This case report describes a 5-year-old girl with biotinidase deficiency who had acute visual loss and gait disturbance but no typical symptoms, responding well to biotin therapy.

research Neurological presentation of psittacosis during a small outbreak in Leicestershire.

25 citations , October 1976 in “The BMJ”

A woman showed neurological symptoms from psittacosis linked to bird exposure, improving after antibiotic treatment.

research Clinical presentation and etiologic factors of hirsutism in premenopausal Iranian women.

16 citations , January 2007 in “Archives of Iranian Medicine”

In this study of premenopausal Iranian women with hirsutism, polycystic ovary syndrome was a common cause and frequently associated with menstrual irregularity, while elevated androgens or hyperandrogenic conditions were also observed.

research Co-presentation of Tapia's syndrome and pressure alopecia—A rare event after septorhinoplasty: A case report and literature review

14 citations , March 2014 in “Acta anaesthesiologica Taiwanica”

This report presents a case of Tapia's syndrome and pressure alopecia occurring simultaneously after open septorhinoplasty, emphasizing the need for awareness of these complications among anesthesiologists and surgeons.

research Clinical presentation and management outcome of childhood-onset systemic lupus erythamatosus in Baghdad.

13 citations , May 2014 in “PubMed”

This study observed that class IV diffuse proliferative glomerulonephritis was the most common form of lupus nephritis among the children studied, with remission achieved in a significant portion after treatment.

research Concomitant presentation of alopecia areata in siblings: A rare occurrence

7 citations , January 2012 in “International Journal of Trichology”

This article highlights differences in childhood alopecia areata compared to adult cases but reports no new clinical findings.

research Unusual Presentation of Tinea Corporis Associated With the Use of a Microneedling Device

6 citations , June 2017 in “Aesthetic Surgery Journal”

This case report describes a 26-year-old woman who developed an unusual fungal skin infection, possibly facilitated by using a microneedling device at home, highlighting the need for safer procedures and aftercare protocols to prevent infection.

research Varying Presentation of Type 1 Polyglandular Failure in India

4 citations , January 2010 in “Journal of pediatric endocrinology & metabolism/Journal of pediatric endocrinology and metabolism”

This study described the clinical course of six young patients with type 1 autoimmune polyglandular failure, all of whom initially presented with hypoparathyroidism followed by mucocutaneous candidiasis and adrenal failure.

research Unusual Presentation of Denys-Drash Syndrome in a Girl with Undisclosed Consumption of Biotin

2 citations , August 2020 in “JCRPE”

This case report describes a girl with Denys-Drash syndrome misdiagnosed with hyperandrogenism due to biotin interference in immunoassays, highlighting the need for awareness of laboratory result discrepancies.

research Clinical Presentation and Diagnosis of Multisystemic Eosinophilic Epitheliotropic Disease in a Miniature Donkey: A Case Report

1 citations , June 2025 in “Journal of Veterinary Internal Medicine”

In this case study, a miniature donkey with multisystemic eosinophilic epitheliotropic disease was euthanized due to laminitis despite treatment for pruritus, inappetence, hypertriglyceridemia, and alopecia.

research HLA‐B alleles associated with frontal fibrosing alopecia in Brazil may share similar peptide presentation and T‐cell interaction profiles

1 citations , February 2024 in “Journal of the European Academy of Dermatology and Venereology”

Certain genetic factors may contribute to frontal fibrosing alopecia in Brazil.

research Rare presentation of disseminated follicular lymphoma as an ill-defined reticular patch over the scalp and forehead

1 citations , April 2019 in “JAAD case reports”

This case report presents a rare manifestation of secondary cutaneous B-cell lymphoma as erythematous macules coalescing into reticular patches on the scalp and forehead.