Search

for
Search:

GlossaryDiffusion Coefficient (Diffusion Constant)

measure of how quickly particles spread in a medium

The diffusion coefficient, also known as diffusivity, is a measure of how quickly molecules or particles spread out over time in a given medium, such as air, water, or within biological tissues. It quantifies the rate at which substances move from areas of high concentration to areas of low concentration, and is influenced by factors like temperature, medium viscosity, and the size of the diffusing particles.

Related Terms

Sort by

Community Join

30 / 78 results

community Buzzed my hair again to see where I’m really at, nothing has really changed in the front but I think the mid-scalp anterior mid-scalp vertex and crown diffusing has stopped/reversed completely. gonna grow it out again, I’m about 7.5 months in now.

130 upvotes 6 years ago

Hair loss treatments, particularly using finasteride and minoxidil. The user has experienced positive results from taking finasteride with no side effects and suggests listening to the podcast of Spencer Kobren for more information on such treatments.

community Losing gains from 7 months of oral min, fin, dut.

in Update 66 upvotes 11 months ago

A user reported losing hair after 7 months of using oral minoxidil, finasteride, and dutasteride, but others reassured that this is likely just a shedding phase where old hairs fall out to make way for new growth. Some users experience sheds every 7-8 months and suggest staying consistent with treatment.

community Why do some have no change even on nuclear stacks ?

in Research/Science 16 upvotes 9 months ago

Some people see significant hair regrowth using treatments like finasteride and minoxidil, while others experience little to no improvement even with comprehensive treatment plans. Factors such as individual sensitivity to DHT may influence the effectiveness of these hair loss treatments.

community Stop Lurking and Start Treatment NOW

in Chat 62 upvotes 2 years ago

Start hair loss treatment as soon as you notice thinning to prevent further loss; finasteride and minoxidil are suggested treatments, with the option to switch to topical treatments if side effects occur. Some regret not starting treatment earlier, and maintaining current hair is more likely than regrowth.

community 10 month update! Fin/min/dermaroller/niz

446 upvotes 5 years ago

A 10 month update on the effectiveness of a hair loss treatment regimen involving minoxidil, finasteride, dermarolling and nizoral. Questions were asked about using minoxidil alone, dermaroller length, age, and when results were seen.

community Are most men bald because they haven’t tried any treatment or are they bald in spite of it?

in Shaved/buzzed 307 upvotes 7 months ago

Some men are bald because they are unaware of hair loss treatments like Minoxidil (Min) and Finasteride (Fin), while others choose not to use them due to potential side effects, cost, or personal preference. Treatments like Min and Fin are discussed, with varying results and opinions on their effectiveness and side effects.

community "DHT Itch" and onset Seborrheic Dermatitis

in Research/Science 76 upvotes 1 year ago

The post and conversation discuss the link between DHT (a hormone), scalp itchiness, and hair loss. Some users share their experiences and treatments, including the use of fluconazole, corticosteroids, and ketoconazole shampoo, with one user suspecting minoxidil as a potential cause of their symptoms.

community After 11 Years On Finasteride, Unfortunately, Hair Is Starting To Thin Again. Does Hair Simply Get More Sensitive To DHT As You Age?

in Finasteride/Dutasteride 95 upvotes 6 months ago

After 11 years on Finasteride, a user's hair is thinning again, suggesting hair may become more sensitive to DHT with age. They plan to introduce Dutasteride once a week, as they cannot tolerate Minoxidil.

community When you're balding is it an absolute traumatic period of your life or do some people not care as much?

in Chat 89 upvotes 4 months ago

Balding can be traumatic for many, affecting self-esteem and social interactions, while others accept it more easily. Treatments mentioned include finasteride, minoxidil, and RU58841.

community 1 Year Update: 1mg Dutasteride daily and 2.5-5mg oral Minoxidil Daily on Diffuse Unpatterned Alopecia

in Progress Pictures 1411 upvotes 7 months ago

A user shared a 1-year update showing hair regrowth from taking 1mg Dutasteride and 2.5-5mg oral Minoxidil daily for Diffuse Unpatterned Alopecia. Some comments praised the results, while others criticized the user's behavior and questioned potential side effects.

community Why I believe PFS is not a "real" condition (and what I believe it is instead)

in Finasteride/Dutasteride 14 upvotes 1 year ago

The post argues that Post-Finasteride Syndrome (PFS) is likely not real and suggests symptoms may be due to mental health issues or the nocebo effect. The conversation includes personal experiences with finasteride, highlighting both positive and negative effects, and emphasizes consulting doctors and using reliable sources for medication.

community Dont fucking wait to start finasteride!

in Chat 372 upvotes 3 years ago

User baldwarrior85 regrets not starting finasteride earlier to prevent hair loss. Others share their experiences, with some having side effects and others seeing positive results from the treatment.

community The link between hair loss and gut health

in Research/Science 59 upvotes 4 years ago

The conversation discusses the potential link between gut health and hair loss, with personal experiences of hair thinning and stomach issues shared. Some individuals found no success with common hair loss treatments like Minoxidil and Finasteride and are exploring the impact of gut health on hair growth.

community I'm sorry I hate it, I cannot enjoy life like this.

in Chat 175 upvotes 2 months ago

A 22-year-old male is frustrated about being the only bald person in his social circle. He has tried minoxidil, finasteride, and dutasteride without success and is considering hair systems, transplants, or counseling.

community 1 month Pyrilutamide. A non responders story to everything.

in Research/Science 218 upvotes 2 years ago

My hairline, I am only 23. This conversation is about a user's experience with treatments for androgenic alopecia, including finasteride, dutasteride, RU, minoxidil, progesterone, melatonin, LLLT, oral minoxidil, and Pyrilutamide. They have tried many treatments over the course of two years without seeing much success, and they are considering getting a hair system as a last resort.

community Young guys read this

68 upvotes 6 years ago

A user's experience with dealing with hair loss, and the advice that was shared by other users to cope with it. Suggested treatments included shaving their head, using medications such as finasteride, minoxidil, and dutasteride, as well as dermarolling.

community Where to find Botox online

in Treatment 6 upvotes 3 years ago

The user is looking for a place to buy genuine Botox online for scalp use. They are seeking recommendations for reliable sources.

community He used Dutasteride for 20 years. Interview

in Treatment 111 upvotes 1 week ago

Dutasteride has been used for 20 years with some hair thickness improvement but no dramatic regrowth. The user also experimented with minoxidil, tretinoin, and peptides like BPC 157 for potential benefits in hair density and quality.

community 3 Months - TE/AGA Update - 5% Min, Keto shampoo and supplements

in Progress Pictures 35 upvotes 5 months ago

User shared progress pictures showing increased hair density after 3 months using 5% Minoxidil, Keto shampoo, and supplements. They recently started finasteride for AGA and plan to update in 3 months.

community If apply topical fin goes systemic then does it matter where I apply it on the scalp?

in Finasteride/Dutasteride 10 upvotes 6 months ago

The conversation is about whether topical finasteride and minoxidil need to be applied directly to the affected areas of the scalp or if they can be spread through blood vessels. It also asks how long topical finasteride remains on a pillow.

community Has anyone regrown hair after iron/zinc deficiency?

in Chat 31 upvotes 3 years ago

Hair regrowth after addressing iron/zinc deficiency. Treatments mentioned include daily supplements of iron and zinc.

community 18 Months Minoxidil 5% Before & After

in Progress Pictures 514 upvotes 1 month ago

The user used Minoxidil 5% for 18 months, seeing improved hair density but no change in the crown area. They are cautious about using Finasteride again due to past gynecomastia.

community How come Dut doesn’t cause more brain problems than fin if it inhibits Type 1 5AR?

in Finasteride/Dutasteride 22 upvotes 4 months ago

Dutasteride and finasteride have similar risk profiles despite Dutasteride blocking more types of 5AR in the brain. Some users report no mood issues with either drug, and it is suggested that Dutasteride's larger molecular size may limit its ability to cross the blood-brain barrier.

community Minoxidil and microneedling results

in Is this regrowth? 20 upvotes 5 months ago

A user reported noticeable hair regrowth after using 5% topical minoxidil daily and microneedling weekly since mid-January. They previously used dutasteride for four years with minimal effect.

community Crown growth update ~ 7 months Fin and topical Min

in Progress Pictures 118 upvotes 5 months ago

User shared progress on hair growth after 7 months of using Finasteride and Minoxidil. They hope for thicker hair on the crown.

community Sharing my 3.5 year journey, keep grinding guys

in Progress Pictures 228 upvotes 7 months ago

The user shared a 3.5-year hair loss treatment journey using 1 mg finasteride daily and minoxidil foam, noting significant improvement, especially in the third year. They also mentioned using Nizoral shampoo twice a week and supplements like vitamin D3, biotin, and omega 3 and 6.

community Why nobody uses 0.25% (2.5mg/ml)?

in Treatment 65 upvotes 10 months ago

The conversation is about the effectiveness of 0.25% topical finasteride compared to other concentrations and forms. Users discuss its potential for better scalp DHT reduction and fewer side effects, with some preferring topical over oral treatments.

community 4 months minoxidil on hairline only

in Progress Pictures 183 upvotes 1 year ago

User experienced good hair regrowth after 4 months of using minoxidil on hairline. Some suggest considering finasteride to maintain results.

community A doctor says to NEVER massage Minoxidil

in Minoxidil 11 upvotes 3 years ago

A user is concerned about the best method to apply Minoxidil for hair loss, noting conflicting advice from doctors. Another user mentions that not massaging the liquid can cause it to drip, suggesting slight spreading with fingers.

community Interesting article links major MPB theories to western diet (and life-style)

in Research/Science 58 upvotes 6 days ago

Poor diet and lifestyle contribute to male pattern baldness. Treatments like Minoxidil, dietary changes, and lifestyle adjustments may help slow hair loss.