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Does topical minoxidil increase skin blood flow? A laser Doppler flowmetry study.
E M de Boer1, P D Bezemer, D P Bruynzeel
1Department of Dermatology, Free University of Amsterdam, The Netherlands.
Acta Dermato-Venereologica
|January 1, 1988
Summary
Topical minoxidil lotion, at 2% or 5% concentrations, did not affect cutaneous blood flow in healthy males with androgenetic alopecia. This study found no significant changes in skin blood flow following minoxidil application.
Area of Science:
- Dermatology
- Pharmacology
- Physiology
Background:
- Androgenetic alopecia is a common form of hair loss.
- Minoxidil is a widely used topical treatment for hair loss.
- Its mechanism of action, particularly on cutaneous blood flow, requires further elucidation.
Purpose of the Study:
- To investigate the effect of topical minoxidil lotion on cutaneous blood flow.
- To assess the impact of different minoxidil concentrations (2% and 5%) and placebo on skin perfusion.
Main Methods:
- Laser Doppler Flowmetry was employed to measure cutaneous blood flow.
- The study included healthy males diagnosed with androgenetic alopecia.
- Minoxidil lotion (2%, 5%) and a placebo were applied topically.
Main Results:
- No significant alterations in cutaneous blood flow were observed after the application of 2% minoxidil lotion.
- Similarly, 5% minoxidil lotion did not induce any measurable reaction in skin blood flow.
- Placebo application also showed no effect on cutaneous blood flow.
Conclusions:
- Topical minoxidil, in the tested concentrations, does not appear to influence cutaneous blood flow in individuals with androgenetic alopecia.
- The findings suggest that any potential benefits of minoxidil in hair regrowth may not be directly mediated by increased skin perfusion.
- Further research is warranted to explore alternative mechanisms of action for minoxidil.