Research
Latest published research we're tracking.
The newest skincare and haircare papers from PubMed, linked to the ingredients we decode. Summaries are the authors' own abstracts — we excerpt, attribute, and link out to the source.
Showing research linked to Formaldehyde (view profile)
Clear11 papers under Contact allergy
A Cross-Sectional Study of Contact Allergens in Hotel Personal Care Products in Canada, the United States and Europe.
Contact dermatitis · 2026
<h4>Background</h4>Personal care products (PCPs), such as shampoos, conditioners and body washes, can contain ingredients that may cause allergic contact dermatitis (ACD). Hotels commonly offer complimentary toiletries; however, there is limited data regarding the allergen content of these products.<h4>Objective</h4>This study aims to identify allergens within PCPs that may cause ACD in hotels… Read on PubMed →
A decade of trends in patch test allergen sensitisation from a dermatology centre in Southeast Asia.
Indian journal of dermatology, venereology and leprology · 2026
Background Geographical and socioeconomic factors influence the type of allergens causing allergic contact dermatitis. Aim To investigate the changing trends of allergen sensitisation among patch-tested patients. Methods A retrospective study was performed on patients undergoing patch testing (PT) over 11 years (2012-2022). Data were retrieved from medical records. Results A total of 1035 patients… Read on PubMed →
Pediatric Allergic Contact Dermatitis: Sensitization Patterns for a Practical Panel.
International archives of allergy and immunology · 2026
<h4>Background</h4>Allergic contact dermatitis (ACD) is increasingly recognized in the pediatric population. Although patch testing is the gold standard for diagnosis, the absence of standardized, evidence-based pediatric patch test panels and limited access to comprehensive allergen series in many settings pose significant diagnostic challenges. This study aimed to evaluate a practical and… Read on PubMed →
Contact Sensitization in Adults With Atopic Dermatitis: A 21-Year Single-Center Tertiary Experience.
Contact dermatitis · 2026
BACKGROUND: Atopic dermatitis is a common chronic inflammatory skin condition. Data on contact sensitization in adults with atopic dermatitis remain limited. OBJECTIVES: To investigate the prevalence of contact sensitization in adults with and without AD: PATIENTS/METHODS: A monocentric, retrospective study analysed 8967 adults (≥ 16 years) patch-tested at the University of Padua (1997-2018)… Read on PubMed →
Marked Impact of Regulatory Bans on Formaldehyde and Formaldehyde-Releaser-Induced Allergic Contact Dermatitis: A Retrospective Cohort Study (1996-2024) From Turkey.
Contact dermatitis · 2026
BACKGROUND: Formaldehyde (FA) and formaldehyde-releasers (FRs) are well-known causes of allergic contact dermatitis (ACD). Following the 2019 EU ban on FA and Quaternium-15 in cosmetics, stable or slightly decreasing sensitisation rates have been reported. In Turkey, both were banned in 2021. OBJECTIVES: To assess FA/FR sensitisation and ACD rates before and after the ban, and evaluate the role… Read on PubMed →
Allergic Risk of Moisturising Cosmetic Products: A Study on the Composition of 300 Products Commercialised in Tunisia.
Contact dermatitis · 2026
BACKGROUND: Moisturising cosmetic products (MCP) formulations may contain ingredients known to trigger allergic contact dermatitis. Claims such as 'hypoallergenic' or 'fragrance-free' are commonly used in marketing, yet these terms are not consistently regulated, potentially posing a risk for patients with allergic contact dermatitis. OBJECTIVES: To assess the allergenic potential of moisturisers… Read on PubMed →
Patch Test Results With the European Baseline Series, 2021/2022-Joint European Results of the ESSCAA and the EBSB Working Groups of the ESCD, and the GEIDACC.
Contact dermatitis · 2026
BACKGROUND: Patch test results obtained with the European Baseline Series (EBS) in its current version serve both contact allergy surveillance and (re-)assessing the diagnostic value of EBS allergens. OBJECTIVES: To present results of current EBS patch testing, obtained in 59 departments in 14 European countries during 2021 and 2022. METHODS: Anonymised or pseudonymised individual data, and… Read on PubMed →
Trends in Contact Sensitization Among Korean Patients: A Multicenter 6-Year Retrospective Patch Test Study.
Contact dermatitis · 2026
BACKGROUND: Allergic contact dermatitis is influenced by demographic factors. Updated epidemiologic data are needed to optimise patch test panels and preventive strategies. OBJECTIVES: To evaluate trends and determinants of allergen sensitization in Korean patients undergoing patch testing. METHODS: Retrospective analysis of patch test records of 2271 patients at 15 university hospitals in Korea… Read on PubMed →
Cosmetic preservatives: physicochemical descriptors, mechanistic toxicity, and methodological approaches.
Toxicology mechanisms and methods · 2026
Cosmetic preservatives are widely used to ensure microbiological stability, yet their health risk assessment requires an understanding of dermal penetration mechanisms, interactions with the skin barrier, and cellular responses. This review presents mechanistic aspects of toxicity across major preservative classes, including parabens, formaldehyde donors, benzyl alcohol and its derivatives… Read on PubMed →
The Prevalence of Contact Allergy to Formaldehyde and Formaldehyde Releasers: A Systematic Review and Meta-Analysis.
Contact dermatitis · 2026
Formaldehyde and its releasers are common preservatives and potent sensitizers. This meta-analysis aimed to estimate the prevalence of formaldehyde contact allergy and allergy to its five most common releasers among dermatitis patients. Two authors independently searched PubMed, Embase, and Web of Science from inception to 30th September 2025. A proportion meta-analysis was conducted using a… Read on PubMed →
What is New in Contact Allergy To Cosmetics for Physicians, Cosmetologists, and Cosmetic Users?
Current allergy and asthma reports · 2025
<h4>Purpose of review</h4>This paper aims to evaluate the burden of contact allergy caused by cosmetic products, identifying the key allergens involved and examining recent regulatory and diagnostic developments. The review addresses which substances commonly induce allergic contact dermatitis and how current trends and emerging allergens impact clinical practice.<h4>Recent findings</h4>Fragrances… Read on PubMed →