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research Fermented grapeseed oil repairs chemically damaged hair via enhanced permeability mechanisms

July 2025 in “Scientific Reports”

This study reported that fermented grapeseed oil may enhance hair permeability and improve strength and color retention in chemically treated hair compared to regular grapeseed or silicone oils.

research Delayed epidermal permeability barrier formation and hair follicle aberrations in Inv-Cldn6 mice

63 citations , April 2005 in “Mechanisms of development”

This study found that heterozygous mice overexpressing Claudin-6 experienced alterations in epidermal and hair follicle differentiation, leading to distinctive coat characteristics and a disrupted epidermal permeability barrier.

research Hair growth promotion, cytotoxicity and skin permeability evaluations of Carthamus tinctorius floret extract

January 2013 in “วารสารเภสัชศาสตร์อีสาน (Isan Journal of Pharmaceutical Sciences, IJPS)”

This study found that Carthamus tinctorius extract significantly increased the length of cultured hair follicles and may be a promising topical agent for hair growth promotion with high skin permeation.

research Evaluation of the permeability of hair growing ingredient encapsulated PLGA nanospheres to hair follicles and their hair growing effects

71 citations , June 2007 in “Bioorganic & Medicinal Chemistry Letters”

This study found that PLGA nanospheres improved scalp-pore permeability and enhanced hair growth activities in mice, suggesting their potential as drug delivery carriers for hair growth ingredients.

Skin-Permeable Liposome Improved Stability and Permeability of bFGF Against Skin of Mice With Deep Second-Degree Scald to Promote Hair Follicle Neogenesis Through Inhibition of Scar Formation

research Skin-permeable liposome improved stability and permeability of bFGF against skin of mice with deep second degree scald to promote hair follicle neogenesis through inhibition of scar formation

26 citations , September 2018 in “Colloids and Surfaces B: Biointerfaces”

This study reported that a novel liposomal formulation, SP-bFGF-SF-LIP, enhanced bFGF stability and skin permeability, significantly improving hair follicle recovery and wound healing in a mouse model.

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Community Join

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community Did Tretinoin turn you into a minoxidil responder after not responding to minoxidil?

20 upvotes 1 year ago

Tretinoin may enhance the effectiveness of minoxidil for hair regrowth by increasing enzyme activity and skin permeability, but its standalone impact is limited. Some users experienced improved hair growth with tretinoin, while others found it worsened their condition.

community Hair shed after adding tretinoin with topical minoxydil

in Minoxidil 3 upvotes 1 year ago

Adding tretinoin to a minoxidil routine can cause initial hair shedding, which may be normal as it potentially increases minoxidil's efficacy. Users suggest being cautious with tretinoin application, especially around microneedling, to avoid increased systemic absorption.

community Sugars ARE important for hair growth | Glycosaminoglycans as Hair Growth Stimulant

74 upvotes 2 years ago

Glycosaminoglycans are important for hair growth, and combining minoxidil with tretinoin and Biopeptide-CL may enhance hair growth by boosting glycosaminoglycan levels and improving the hair follicle environment. Users discussed the potential effectiveness and future of these treatments.

community Peptides that Stop Hair Loss? | In-depth Literature Review Video

76 upvotes 2 years ago

Peptides like TB500, KPV, GHK-CU, and BPC-157 are overhyped for hair growth with limited proven effectiveness in humans. Combining peptides with delivery methods like iontophoresis and sonophoresis shows promise, but many claims remain unproven.

community 3 years on meds and my hair looks like this. Not sure if they are working.

in Minoxidil 4 upvotes 1 month ago

The user has been using minoxidil and finasteride for hair loss but hasn't seen positive results, experiencing side effects like dry eyes and possible seborrheic dermatitis. Suggestions include adding dutasteride, using ketoconazole shampoo, microneedling, and waiting longer for results.

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Learn

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learn Tretinoin

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

learn Hair Fibers

cosmetic product that temporarily makes hair appear thicker

Do hair fibers really make thinning hair look fuller, or is it just an illusion? Hair fibers create an optical illusion of fullness but do not actually thicken hair.
How do you apply hair fibers correctly so they stay in place all day? Apply hair fibers to clean, dry hair and use a setting spray for better hold.
Can hair fibers be used along with medical treatments like minoxidil or finasteride? Yes, hair fibers can be used with minoxidil or finasteride without any chemical interaction.
All 5 questions on Hair Fibers →

learn Hair Multiplication

extract, clone, and reinsert your own hair cells

learn Hair Transplant

Hair transplantation moves DHT-resistant follicles from a donor area (back and sides of the scalp) into thinning or bald areas. The transplanted hair is generally permanent, though surrounding native hair can keep thinning.

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Clinics

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Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas