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GlossaryLight Exposure

amount of light received by an organism over time

Light Exposure refers to the amount of light that an object or organism receives over a period of time. This can include natural sunlight or artificial light sources. In biological contexts, light exposure can significantly impact various physiological processes, such as circadian rhythms, skin health, and hair growth. For instance, excessive exposure to ultraviolet (UV) light can damage skin cells and hair follicles, potentially leading to conditions like alopecia.

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community Sunlight: Does it Stimulate Hair Growth or Hair Loss?

in Research/Science 64 upvotes 2 years ago

The conversation discusses whether sunlight exposure affects hair growth or loss, with mixed anecdotes and theories but no clear consensus. Some suggest moderate sunlight can benefit hair by providing vitamin D, while others doubt its effectiveness compared to treatments like Minoxidil or finasteride.

community Is it safe to use Minoxidil and Retinol at the same time?

in Minoxidil 4 upvotes 5 years ago

Using Minoxidil and Retinol together is generally safe, but caution is advised if adding Retinol to a topical hair solution, as excessive Retinol can lead to hair loss, especially with sun exposure.

community Does pyri/kx826 degrade in exposure to bathroom light?

in Treatment 5 upvotes 1 year ago

The conversation discusses concerns about RU58841 degrading when exposed to light and transferring pyri to a dark glass bottle to prevent this. The user keeps the pyri out for only two minutes before storing it in a dark place.

community Evolution theory: AGA is your body trying to reduce the risk of prostate cancer by exposing your scalp to more UV

in Research/Science 6 months ago

Androgenic alopecia (AGA) might have evolved to reduce prostate cancer risk by increasing UV exposure to the scalp, but this theory is debated. Treatments like minoxidil and finasteride are used for AGA, though the exact causes and evolutionary reasons for hair loss are unclear.

community New Light Therapy Can Suppress a Key Marker of Hair Loss by 92%

in Research/Science 201 upvotes 2 months ago

A new light therapy claims to reduce hair loss markers by 92% using a specific wavelength range. Users discuss the cost and effectiveness of devices, with some expressing skepticism and others considering alternative treatments like red light therapy and vitamin D exposure.

community South Korean Red Light Therapy Study

in Research/Science 39 upvotes 3 months ago

Korean scientists developed a red light therapy that reduces a hair loss marker by 92%. Users discussed the benefits and drawbacks of natural sunlight versus red light caps for hair health, with some suggesting supplements for vitamin D.

community Vitamin D advice I received after seeing my blood work.

in Research/Science 88 upvotes 4 years ago

The conversation discusses the importance of taking vitamin D with food for better absorption and its potential role in hair loss. Some users also suggest taking vitamin D with K2, getting sunlight, and using finasteride for hair loss treatment.

community 28M, For the past 8 months on 1.25mg of fin

in Progress Pictures 330 upvotes 1 year ago

A 28-year-old male experienced significant hair regrowth over 8 months using 1.25mg of finasteride daily, without minoxidil or micro needling. He also took vitamin D3, K2, magnesium, and a B100 complex, reporting increased libido as a side effect.

community People who solved their Vitamin D deficiency, how much did it help with regrowth?

in Treatment 56 upvotes 1 year ago

Vitamin D supplementation can aid hair regrowth for some, but results differ. Combining vitamin D with finasteride and minoxidil often improves hair thickness, though not for everyone.

community PSA: Check your vitamin D levels!

in Treatment 317 upvotes 11 months ago

Low vitamin D levels can negatively impact hair growth, and supplementing with vitamin D, along with treatments like finasteride and minoxidil, may help improve hair health. Quitting smoking and ensuring adequate vitamin B12 and K2 intake are also suggested to support hair regrowth.

community Losing ground on finasteride, 14 month update

in Progress Pictures 11 upvotes 1 year ago

The conversation is about a user experiencing hair loss despite using finasteride for 14 months, with suggestions to try other treatments like dutasteride or minoxidil. The user is hesitant to use minoxidil due to a family history of heart problems.

community Vitamin D deficiency strongly correlates with androgenic alopecia, FMPH and telogen effluvium

in Research/Science 162 upvotes 1 year ago

Vitamin D deficiency is linked to hair loss, and supplementation with vitamin D can improve conditions like androgenic alopecia and telogen effluvium. Users discussed various dosages of vitamin D, emphasizing the importance of getting blood tests to determine the appropriate amount.

community A hill on which I will die: The DHT itch absolutely exists

in Research/Science 210 upvotes 2 years ago

The DHT itch is linked to hair loss and persists despite finasteride use; switching to dutasteride helped alleviate the itch and promoted regrowth. Some users suggest seborrheic dermatitis as a cause and recommend treatments like medicated shampoos, vitamin D, and minoxidil.

community Take A Vitamin D Blood Test!!!

in Treatment 48 upvotes 4 years ago

Low Vitamin D can cause hair shedding, and taking 5000 IU of Vitamin D daily reduced shedding significantly. Vitamin D deficiency is common and correcting it can benefit overall health.

community 5-Months Update: Minoxidil + Red Light Therapy + Lifestyle Changes

in Progress Pictures 1031 upvotes 1 year ago

The user reported positive hair regrowth after 5 months using Minoxidil, red light therapy, and lifestyle changes, including dietary improvements and stress reduction. They chose natural supplements like saw palmetto and beta-sitosterol over pharmaceutical DHT inhibitors like finasteride.

community Sucess story for you guys, pics are 10+ years apart.

in Progress Pictures 311 upvotes 2 years ago

A user shared a success story showing hair regrowth over 10 years, attributing it to quitting creatine and taking 0.5mg finasteride. Some commenters were skeptical about creatine's impact, while others inquired about side effects, and the original poster reported no negative effects from finasteride.

community Can we once and for all clarify whether tretinoin helps or hurts hair?

in Treatment 42 upvotes 5 years ago

Tretinoin's effect on hair loss is debated; some say it improves minoxidil's effectiveness, while others claim it causes hair loss. Treatments discussed include tretinoin, minoxidil, finasteride, RU58841, 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 Study shows significant improvement in hair with topical minoxidil and oral Vitamin d compared to just topical minoxidil alone.

in Minoxidil 206 upvotes 1 year ago

Taking oral Vitamin D alongside topical minoxidil improves hair density more than using minoxidil alone. Users discuss Vitamin D dosages, potential benefits, and the importance of combining it with Vitamin K2.

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

in Research/Science 58 upvotes 1 year ago

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

community Does vitamin D deficiency actually cause hair loss? Has anyone actually grew back hair after fixing vitamin d levels?

in Chat 65 upvotes 1 year ago

Vitamin D deficiency can contribute to hair loss, but it is not the sole cause, and supplementation may not always resolve the issue. Treatments like finasteride and minoxidil are recommended for hair regrowth, with vitamin D and other supplements providing additional support.

community Hair and plants analogy and dht (serious)

in Research/Science 2 upvotes 2 months ago

Hair loss may be linked to DHT, which can both suppress and increase inflammation, potentially as a defense mechanism. Treatments like Minoxidil, Finasteride, and RU58841 are discussed, but the exact cause of hair loss remains unclear.

community Tretinoin can make it worse!!!

in Chat 7 upvotes 2 years ago

Tretinoin may enhance minoxidil's effectiveness for those not responding to minoxidil alone, but it could reduce efficacy for some who are already responding to minoxidil. Tretinoin requires careful use, including skin moisturizing and sun protection due to increased sensitivity.

community Can low level of vitamins cause hair loss?

in Research/Science 22 upvotes 2 years ago

The conversation is about whether low vitamin levels can cause hair loss. The consensus is that the user's vitamin levels are normal and unlikely to affect hair loss or the effectiveness of finasteride and minoxidil treatments.

community Minoxidil seems logistically impossible and impractical to use

in Minoxidil 136 upvotes 2 years ago

The post discusses concerns about the practicality of using Minoxidil foam for hair loss, including the frequency of application, preparation, coverage area, and drying time. Responses suggest that missing a dose isn't detrimental, it can be applied once a day, it works on all hair areas, and it doesn't need to be perfectly dry before application.

community Going to try and reverse MPB naturally.

in Treatment 55 upvotes 4 years ago

A user is trying to reverse male pattern baldness (MPB) naturally by taking high doses of Vitamin D, improving diet, exercising, reducing stress, and other lifestyle changes, but plans to use finasteride if no results are seen in 60 days. Other users are skeptical, advising medical treatments like finasteride and warning against potential vitamin D overdose and the ineffectiveness of natural remedies for genetic hair loss.

community My Theory Regarding a Cause and Cure for Androgenetic Alopecia

in Treatment 94 upvotes 6 years ago

Hair loss theory suggests imbalance between Vitamin D Receptor (VDR) and Androgen Receptor (AR) activation. Proposed treatment includes upregulating VDR, downregulating AR, and improving mitochondrial health.

community Do you think people of previous generations had better hair? What changed?

in Chat 2174 upvotes 8 months ago

Hair loss is less common now due to accessible treatments like finasteride, minoxidil, and hair transplants. Improved hair care, skincare, and lifestyle changes contribute to people looking younger today.

community How a follicle next to it is so genetically different that it never miniaturized??

in Chat 219 upvotes 8 months ago

Genetic differences in hair follicles affect hair loss patterns. Treatments discussed include finasteride, dutasteride, minoxidil, and RU58841.

community The homeless crackhead protocol

in Satire 4488 upvotes 9 months ago

The conversation humorously suggests that drug use might be more effective for hair retention than traditional treatments like minoxidil or finasteride. It attributes full heads of hair in homeless individuals to lifestyle factors like reduced stress or hormonal changes.