Lipidomic Insights into Seborrheic Dermatitis: Clinical Evaluation of Sebum Changes Using SpiderMass
Lucille Darras1,2, Célia Ipinazar1, Eléonore Gravier1
1Pierre Fabre Dermo-Cosmetics & Personal Care, Research & Development Department, 3 Avenue Hubert Curien, BP 13562, 31100, Toulouse, France.
Dermatology and Therapy
|March 27, 2026
Summary
An anti-seborrheic dermatitis (SD) shampoo restored scalp lipid balance and reduced inflammation. SpiderMass technology non-invasively monitored these changes, showing promise for clinical skin analysis.
Area of Science:
- Dermatology
- Biochemistry
- Analytical Chemistry
Background:
- Seborrheic dermatitis (SD) involves scalp inflammation, linked to sebum production and Malassezia fungi.
- Fungal breakdown of sebum releases pro-inflammatory fatty acids, necessitating lipidomic and metabolomic analysis.
- SpiderMass, an ambient ionization mass spectrometry (AIMS) tool, offers fast, non-invasive sebum profiling.
Purpose of the Study:
- To evaluate SpiderMass for skin metabolome and lipidome analysis in scalp SD.
- To assess the impact of an anti-SD shampoo (Kelual DS®) on scalp metabolites and lipids.
Main Methods:
- 42 subjects with scalp SD participated in a randomized controlled trial.
- Sebum samples were collected and analyzed using SpiderMass during a 2-week intensive and 8-week maintenance shampooing phase.
- Comparison between anti-SD shampoo (KDS group) and neutral shampoo (control group) was performed.
Main Results:
- SpiderMass showed increased glycerolipids and saturated fatty acids, with reduced inflammation markers (histamine, oxylipins, arachidonic acid) after 2 weeks.
- Lipid profile changes correlated with decreased Malassezia levels.
- The KDS group maintained a balanced lipid profile and reduced inflammation during the maintenance phase.
Conclusions:
- The anti-SD shampoo improved scalp lipid balance and reduced inflammation, potentially enhancing skin barrier function.
- SpiderMass enabled real-time, non-invasive monitoring of biochemical changes, consistent with LC-MS data.
- SpiderMass is a reliable tool for rapid biochemical skin analysis in clinical studies, offering insights into SD mechanisms and treatment.
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