52 citations
,
February 1985 in “Archives of Dermatology” Minoxidil absorbs poorly through skin, with low risk of side effects at 1-2% concentration.
25 citations
,
June 1990 in “Journal of Pharmaceutical Sciences” This study found that minoxidil absorption through the skin increased with longer contact times, reaching over 75% of the maximum absorption within four hours.
18 citations
,
October 2005 in “International Journal of Pharmaceutics” This study found that incorporating 0.5% TPGS into topical minoxidil solutions enhanced hair growth in mice, although increasing TPGS to 2% decreased effectiveness.
1 citations
,
June 2022 in “Pharmaceutics” This study found that paracellular transport significantly contributes to the intestinal permeability of minoxidil, suggesting its limited suitability as a Biopharmaceutics Classification System reference drug due to potential variability.
April 2025 in “American Journal of Case Reports” This case report highlights that improper application techniques, such as scalp occlusion, can increase systemic absorption of minoxidil and lead to unwanted side effects like hypertrichosis.
30 citations
,
April 1990 in “Clinical Pharmacology & Therapeutics” This study found that coadministering minoxidil with tretinoin cream increased minoxidil absorption nearly threefold in healthy males, attributed to increased stratum corneum permeability.
January 2005 in “Belarusian State Pedagogical University repository (Belarusian State Pedagogical University)” In this study, a 0.5% addition of TPGS to topical minoxidil solutions increased hair growth in mice, but higher concentrations reduced this benefit.
January 2022 in “Carolina Digital Repository (University of North Carolina at Chapel Hill)” March 2026 in “Mini-Reviews in Medicinal Chemistry” This review reports that pharmacogenomic variations in the SULT1A1 enzyme significantly influence the response to minoxidil treatment for alopecia, suggesting personalized therapeutic strategies could improve efficacy while emerging pharmaceutical technologies aim to optimize oral minoxidil's absorption and minimize side effects.
44 citations
,
January 1997 in “British Journal of Dermatology” In this study, five women with androgenetic alopecia experienced severe facial and limb hypertrichosis after using 5% topical minoxidil, which resolved after discontinuing the treatment.
18 citations
,
January 1997 in “British Journal of Dermatology” In this study, five women with androgenetic alopecia developed severe hypertrichosis on the face and limbs after using 5% topical minoxidil, which resolved after discontinuing the treatment.
10 citations
,
February 2016 in “Anais Brasileiros de Dermatologia” This case report describes a 5-year-old child in Brazil who developed generalized hypertrichosis after using topical minoxidil, suggesting caution when using it in children.
4 citations
,
January 2009 in “International journal of trichology” Minoxidil topical foam is a better, less irritating treatment for hair loss.
2 citations
,
January 2012 in “Hair therapy & transplantation” This study observed that DDAIP-HCl enhanced the permeation of minoxidil through human cadaver skin, suggesting potential for improved treatment efficacy in male pattern hair loss.
1 citations
,
May 2025 in “Archives of Dermatological Research” This study found that microinfusion of 0.5% minoxidil in the scalp led to a significant reduction in diastolic blood pressure, indicating systemic absorption, while the control group experienced a rise in systolic pressure possibly due to procedural pain.
October 2015 in “Elsevier eBooks” Minoxidil is effective for hair growth and safe for long-term use.
July 2022 in “Journal of Investigative Dermatology” This study found that a new alcohol-free minoxidil hydrogel formulation showed comparable in vitro efficacy and skin absorption to the commercial minoxidil product for treating androgenetic alopecia.
181 citations
,
July 2004 in “Journal of controlled release” In this study, researchers found that in hairy guinea pig skin, minoxidil delivered via 40-nm nanoparticles had higher skin penetration than 130-nm nanoparticles, indicating nanoparticle size affects permeation.
44 citations
,
October 1989 in “International Journal of Pharmaceutics” This study found that topical minoxidil solutions showed the highest skin permeation at 3-4% concentrations, with crystallization occurring at a 5% concentration due to vehicle component evaporation.
39 citations
,
April 2010 in “International Journal of Pharmaceutics” This study found that using monoolein cubic phase nanoparticles with an entrapped hydroxypropyl β-cyclodextrin/minoxidil complex increased minoxidil skin permeation, but minoxidil retention in the skin was higher with a traditional solution.
27 citations
,
September 2018 in “Medicines” This study reported that oleic acid-based nanovesicles improve follicular delivery and reduce side effects of minoxidil compared to traditional MXD lotions.
26 citations
,
May 2012 in “Pharmaceutical Development and Technology” PEVs effectively deliver minoxidil through skin.
23 citations
,
April 1991 in “Journal of The American Academy of Dermatology” Minoxidil solution can cause skin irritation and allergies in some users.
19 citations
,
March 2011 in “Cutaneous and Ocular Toxicology” Some chemicals absorbed through the skin can cause serious health problems.
18 citations
,
March 1984 in “BMJ” Minoxidil helps hair regrowth in alopecia, but more research needed.
17 citations
,
October 2013 in “F1000Research” This case report details a 2-year-old boy who developed generalized hypertrichosis after using 5% minoxidil foam for alopecia areata, highlighting the importance of caution and proper administration instructions for young children.
7 citations
,
August 2024 in “JAAD reviews.” This review reports that low-dose oral minoxidil can cause hypertrichosis due to increased systemic absorption, and highlights the importance of patient-centered care to manage the psychosocial impacts of this side effect effectively.
2 citations
,
November 2017 in “Journal of Cosmetic and Laser Therapy” This study found that JetPeel-assisted topical minoxidil significantly improved hair growth in patients with androgenetic alopecia compared to topical minoxidil alone or no treatment.
March 2026 in “International Journal of Dermatology” In this study, two cases of generalized hypertrichosis in young children were reported as resulting from indirect exposure to topical minoxidil through skin contact with caregivers, emphasizing the importance of preventing unintended contact and recognizing potential reversible side effects in pediatric populations.
August 2025 in “Macromolecular Bioscience” This study found that microneedles co-delivering minoxidil and a nitric oxide donor effectively promoted hair growth and follicle transition to the growth phase in an alopecia mouse model, suggesting a promising new approach for androgenetic alopecia treatment.