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GlossaryTotal Internal Reflection

light reflects entirely within a medium at a critical angle

Total Internal Reflection (TIR) occurs when a light wave traveling through a medium with a higher refractive index (like water or glass) hits the boundary of a medium with a lower refractive index (like air) at an angle greater than the critical angle, causing the light to be completely reflected back into the original medium rather than refracting through the boundary. This phenomenon is crucial in fiber optics, where it allows light to be efficiently transmitted over long distances with minimal loss.

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community Young guys 18-25, did hair loss destroy you mentally and affect your life? And if you did recover from it have you truly ever felt the same?

in Chat 146 upvotes 8 months ago

Hair loss greatly affects mental health and social life for young men. Treatments like finasteride, minoxidil, and hair transplants are common, with mixed success and ongoing self-esteem challenges.

community Balding, short, small penis. What is the point of living…

in Treatment 405 upvotes 5 years ago

A 24 year old male struggling with the physical and mental effects of balding, being short, and having a micropenis. Suggested treatments include taking medications such as finasteride and minoxidil, lifting weights, and trying not to compare himself to others.

community Embraced baldness. Time to leave this subreddit

in Chat 870 upvotes 1 year ago

A user shared their positive experience of embracing baldness after years of trying treatments like Minoxidil and finasteride. They found happiness and confidence by shaving their head, despite some social challenges, and encouraged others to focus on their attitude and seek therapy if needed.

community How the average guy dont care about balding?

in Research/Science 128 upvotes 4 years ago

Many people experience hair loss but don't treat it. Common treatments include Minoxidil, Finasteride, and microneedling.

community If You Have DUPA, PLEASE READ THIS: Everyone Should Be Scalp Biopsied

in Research 830 upvotes 1 year ago

Scalp biopsies are crucial for diagnosing hair loss conditions like Diffuse Unpatterned Alopecia (DUPA) and retrograde hair loss, as treatments like finasteride and dutasteride may not be effective if other conditions are present. Combining PPAR-GAMMA agonists with retinoids could improve treatments for conditions like Lichen Planopilaris.

community Am I a good candidate for finasteride? (Bloodwork) 18M NW2

in General 56 upvotes 11 months ago

An 18-year-old with Norwood 2 hair loss is considering finasteride treatment. Bloodwork shows testosterone and hormone levels mostly within normal ranges, except for low estradiol.

community 5 months since I became obsessed with my hair

in Is this regrowth? 7 months ago

The user is experiencing hair regrowth and increased hair thickness after using supplements like biotin, zinc, selenium, and a complex with various natural ingredients, along with topical caffeine. They are considering using topical minoxidil and mesotherapy in the future.

community Front page article at The New York Times (biggest circulation in the world) regarding notable results with oral minoxidil is a pretty big deal

in Minoxidil 3 years ago

This conversation discusses the potential benefits of using oral minoxidil and finasteride to treat hair loss, with some users sharing their own experiences in taking the medications. Others express concerns about the safety of these treatments.

community 📈 Solving for very low dose topical finasteride titration intervals

in Research/Science 30 upvotes 1 year ago

The conversation discusses using very low dose topical finasteride to achieve specific serum DHT reduction percentages. It concludes that finasteride dosage increases linearly between 5-30% DHT reduction but requires exponential increases for reductions up to 70%.

community Suffer so bad I want it to end

in Chat 111 upvotes 1 year ago

A 23-year-old is distressed about hair loss despite using dutasteride and oral minoxidil and is considering a hair transplant in Turkey. Many suggest therapy, hair systems, or acceptance, emphasizing mental health over appearance.

community Got my first hair system put on yesterday. I feel like a brand new man. Haven’t been confident in so many years.

in Hair Systems 385 upvotes 4 years ago

User got first hair system and feels confident. Cost $200, attached at hairclub for $150, considering $400 monthly membership for weekly visits and new system monthly.

community Meta analysis of minoxidil only vs 5AR inhibitors

in Research/Science 58 upvotes 1 year ago

Oral dutasteride is the most effective for hair regrowth, followed by oral finasteride and minoxidil. Topical finasteride combined with minoxidil is recommended for those avoiding systemic DHT reduction.

community How significant is the difference between 0.5mg Dut and 1mg Fin?

in Finasteride/Dutasteride 11 upvotes 2 years ago

0.5mg dutasteride reduces scalp DHT more than 1mg finasteride, leading to better hair regrowth results. Users report significant improvement with dutasteride compared to finasteride.

community Oral minoxidil is not good for your health, let’s use research chemicals bought from AliExpress

in Satire 551 upvotes 3 years ago

. This conversation discussed the efficacy of Minoxidil and Finasteride as treatments for hair loss, with a focus on the potential side effects of taking Oral Minoxidil. Some users shared their experiences with both treatments and there was debate over whether they were safe or not.

community Y'all, we have got to come to a consensus on the specifics of microneedling.

in Microneedling 27 upvotes 4 years ago

Microneedling can promote hair growth, but there is uncertainty about the best practices, including needle length, device, and session frequency. Users discuss using needle lengths between 0.5mm and 1.5mm, with some experiencing pinpoint bleeding, and emphasize the need for more reliable resources and guidelines.

community Dutasteride Mesotherapy Works – Just 1 month results

in Progress Pictures 108 upvotes 4 years ago

The effectiveness of using dutasteride mesotherapy as a hair loss treatment, with other protocols such as microneedling, vitamin D and B12, zinc, and biotin. The user's results were positive after 4-6 months without any serious side effects.

community No longer have drive in the gym

in Chat 8 upvotes 1 month ago

The user lost gym motivation after taking finasteride for four months, possibly due to its effect on DHT levels. Suggestions include adjusting dosage, trying topical treatments, using caffeine, checking testosterone levels, and considering supplements like SSRIs or pregnenolone.

community Creatine? Experiences?What say YOU?

in Research/Science 7 upvotes 2 months ago

Creatine may cause hair shedding in some individuals, but there is no strong scientific evidence linking it to hair loss. Many users report personal experiences of increased hair loss with creatine, while others see no effect; OP is considering creatine while using finasteride and topical minoxidil for hair loss.

community Does creatine really speed up hair loss if you have male pattern baldness?

in Chat 132 upvotes 8 months ago

Creatine is not proven to cause hair loss, but some report increased shedding, especially with male pattern baldness. Finasteride or minoxidil are suggested to counteract potential hair loss while using creatine.

community 18M 8 months progress 40mg daily dut stack

in Progress Pictures 112 upvotes 1 year ago

An 18-year-old is using a high-dose hair loss treatment with 40mg daily dutasteride, finasteride, minoxidil, tretinoin, and topical bicalutamide. Despite health risk concerns, especially liver issues, they report hair regrowth progress and intend to continue the regimen.

community Dutasteride Infertility Debunked: Low T causes true infertility.

in Finasteride/Dutasteride 167 upvotes 1 year ago

Dutasteride and finasteride may temporarily affect semen quality but are unlikely to cause permanent infertility. The Kim et al. study is criticized for poor methodology, and many prefer hair retention over potential fertility concerns, using treatments like dutasteride, finasteride, and minoxidil.

community Well here I am 3-4 years later.

in Update 56 upvotes 2 years ago

The conversation is about someone who has been taking finasteride for hair loss without success, considering switching to dutasteride or giving up treatment. Suggestions include trying dutasteride, microneedling, infrared therapy, multivitamins, and high-concentration topical solutions combining finasteride and dutasteride.

community Why I deleted my YouTube channel Part I

in Update 118 upvotes 5 years ago

A YouTuber named Kevin, also known as Rider_Of_Roach, who deleted his YouTube channel due to personal attacks and controversy surrounding his views on hair loss treatments. He advocated for FDA-approved treatments like finasteride and minoxidil but faced backlash from those who disagreed with him. The conversation also discusses his past trolling behavior and a lawsuit he filed against a website that published false information about him. Despite some disagreements, many viewers appreciated his research-based content and hope to see him return in the future.

community Why isn't fluridil more widely used and known about?

in Treatment 9 upvotes 5 years ago

Fluridil, an antiandrogen that is not widely used or known about due to its expense and lack of availability in the US. It is suggested as a potential alternative for people who don't want to lower their DHT through treatments such as Minoxidil, Finasteride, Nizoral shampoo, and Dermarolling.

community I am actually regrowing my hairline without minoxidil or finasteride (mechanical stimulation)

128 upvotes 7 years ago

Regrowing hairline without the use of Minoxidil or Finasteride, and instead using mechanical stimulation such as Derma Roller, Nizoral, Zinc Pyrithione, Scalp Massage, Scalp Exercise, Fish Oil and other topical solutions. It is cautioned that there are risks associated with not using medically-prescribed treatments, but it is suggested to consider mechanical stimulation in addition to those prescribed treatments.

community Publication concludes finasteride is a associated with a 60% risk of persistent sexual dysfunction.

in Research/Science 342 upvotes 3 months ago

Finasteride is not linked to a 60% risk of persistent sexual dysfunction; this figure applies only to those already experiencing sexual issues. Most users do not have side effects, and the study's methodology is criticized for selection bias.

community Just Minoxidil 5% twice a day for 5 months

in Progress Pictures 584 upvotes 10 months ago

Significant hair regrowth was achieved using 5% Minoxidil twice daily and weekly microneedling with a 0.8 mm dermaroller over five months. Finasteride was not used due to concerns about side effects and availability in France.

community Almost 4 months of fin/min… quit waiting!!!

in Is this regrowth? 461 upvotes 11 months ago

A user shared their positive experience with hair regrowth using finasteride, minoxidil, dermastamping, and keto shampoo, noting significant improvement in four months without major side effects. They encouraged others to start treatment early and shared tips for application and tracking progress.

community Cardio for more than 60 minutes reduces DHT levels and improve hair growth

in Research/Science 126 upvotes 1 year ago

Long aerobic exercise (over 60 minutes) can reduce DHT levels and improve hair health. Some users discuss using Tadalafil (Cialis) to further reduce DHT after exercise, while others mention using treatments like Minoxidil, Finasteride, and RU58841 for hair growth.

community Attention Finasteride / Dutasteride and Your liver

in Finasteride/Dutasteride 380 upvotes 1 year ago

Finasteride may cause elevated liver enzymes, potentially leading to liver issues, though this is rare. Users should monitor liver function and consider topical alternatives if liver sensitivity occurs.