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Research

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research The role of tight junctions in skin barrier function and dermal absorption

156 citations , August 2016 in “Journal of controlled release”

This review summarizes current knowledge on tight junctions in mammalian skin and their role in drug delivery and interaction with other barrier components, but reports no new experimental results.

research Role of Transepidermal and Transfollicular Routes in Percutaneous Absorption of Steroids: In vitro Studies on Human Skin

82 citations , January 1994 in “Skin Pharmacology and Physiology”

This study found that human skin with hair follicles and sebaceous glands absorbed significantly more steroids than scar skin without these appendages, indicating their role in steroid penetration.

research Microneedles as Enhancer of Drug Absorption Through the Skin and Applications in Medicine and Cosmetology

55 citations , March 2018 in “Journal of pharmacy & pharmaceutical sciences”

This article reviews the applications of microneedle technology in drug delivery, dermatology, and cosmetics, but it presents no new experimental or clinical findings.

research Caffeic acid skin absorption: Delivery of microparticles to hair follicles

14 citations , April 2019 in “Saudi pharmaceutical journal”

This study reported that microparticle-loaded emulsions containing caffeic acid achieved more homogeneous distribution and prolonged release in hair follicles, suggesting potential for effective folliculitis treatment.

research The risk of hydroquinone and sunscreen over-absorption via photodamaged skin is not greater in senescent skin as compared to young skin: Nude mouse as an animal model

18 citations , May 2014 in “International journal of pharmaceutics”

This study found that UVA and UVB exposure increased hydroquinone and sunscreen absorption in nude mouse skin, with less absorption enhancement observed in more lipophilic sunscreens.

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Community Join

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community Does tretinoin cream affect minoxidil absorption if applied first?

in Minoxidil 1 upvotes 11 months ago

Apply tretinoin cream first, then minoxidil, as tretinoin can enhance minoxidil absorption. Allow some time between applications to avoid skin irritation.

community How to use tretinoin for maximum minoxidil absorption

in Minoxidil 11 upvotes 1 year ago

Using tretinoin to enhance minoxidil absorption for hair loss treatment. Apply tretinoin, wait 30 minutes, then apply minoxidil; use moisturizer to manage skin reactions.

community How do you guys apply min with an intensive skin care routine?

3 upvotes 7 years ago

The conversation is about the order of applying minoxidil in a skincare routine, specifically whether to apply it before or after witch hazel and moisturizer. The user is concerned about the lotion interfering with minoxidil absorption.

community How long does it to start recovering from hair loss / thinning / super brittle after starting taking huge amounts of iron supplements?

in Transgender 1 upvotes 11 months ago

Iron supplements can help improve hair thinning and brittle skin, but recovery time varies based on individual factors like ferritin levels and absorption rates. Regular blood tests are recommended to monitor ferritin and iron levels.

community Why leave minoxidil on the scalp for more than 30 minutes?

49 upvotes 2 years ago

Minoxidil should be left on the scalp for at least 4-6 hours for effective absorption, even if it feels dry after 30 minutes. The skin's interaction with the chemical continues regardless of the solution's evaporation.

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Learn

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learn retinol

Can retinol help enhance the absorption of ingredients like minoxidil or peptides? Retinol may enhance absorption of minoxidil and peptides by modifying skin barrier properties.

learn Folic acid

Is there a difference between taking folic acid supplements and using folic acid in topical hair products? Oral folic acid uses the body's normal absorption route and can correct a measured deficiency, but no published trial shows it treats hair loss; topical folic acid has no human evidence for hair growth and struggles to cross the skin barrier at all.

learn Microneedling

technique to create small wounds in skin to activate collagen production and hair growth

learn Latanoprost

Can latanoprost be safely applied to the scalp, or is it only for eyelashes? Latanoprost is not approved for use on the scalp and its safety there has not been established: the only human scalp evidence is one 24-week pilot trial in 16 men, and clinicians flag irritation, skin darkening and unknown absorption over a large area as open risks.
What are the possible side effects of using latanoprost on the scalp? No study has measured the side effects of latanoprost on the scalp. The reactions listed here are extrapolated from the eye-drop label — irritation, burning, itching and skin darkening — plus the systemic reactions the label records at ophthalmic doses; absorption over a whole scalp has never been measured.

learn Tretinoin

the gold standard retinoid in dermatology that's also helpful for hair regrowth alongside Minoxidil

learn Vascular Endothelial Growth Factor

learn sh-Polypeptide-7

learn Beta Polypeptide

learn Melatonin

Can melatonin cause side effects on the skin or hair? Melatonin may cause hair loss or thinning in some users, but evidence is limited.

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Clinics

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All 500 clinic results →

Experts

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35
SMP Specialist
Noelle Skin
Nice, France

Noelle Skin