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Glossary Visible Light

portion of the electromagnetic spectrum detectable by human eyes

Visible light, also known as the visible spectrum, is the portion of the electromagnetic spectrum that can be detected by the human eye. It ranges from wavelengths of approximately 380 to 750 nanometers and is responsible for the colors we perceive, from violet to red.

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Research

5 / 1000+ results

research Effects of Visible Light on the Skin^†

195 citations , January 2008 in “Photochemistry and Photobiology”

This review discusses the effects of visible light on human skin, highlighting its role in pigmentation, thermal damage, and the treatment of several skin conditions, while noting limited sunscreen protection against it; no new clinical results are reported.

research Visible red light enhances physiological anagen entry in vivo and has direct and indirect stimulative effects in vitro

35 citations , December 2014 in “Lasers in surgery and medicine”

This study found that red light accelerated the transition from the resting to growth phase in hair follicles faster than green and blue light in mice, suggesting it may stimulate hair growth.

research Photobiomodulation in Dermatology: Harnessing Light from Visible to Near Infrared

9 citations , January 2018 in “Medical research archives”

This review discusses the therapeutic use of photobiomodulation for various skin conditions, highlighting its efficacy in accelerating tissue repair, reducing inflammation, and treating pigmentary disorders and other skin diseases, but it reports no new clinical results.

research A study of the photolightening mechanism of blond hair with visible and ultraviolet light

7 citations , September 2004 in “International Journal of Cosmetic Science”

This study demonstrated that visible light lightens blond hair more effectively than ultraviolet light, attacking melanin granules directly, whereas ultraviolet light primarily damages other hair tissues following washing.

research Green chemistry method for hair strengthening and setting using visible light-mediated protein crosslinking

4 citations , June 2022 in “Journal of cleaner production”

This study found that a new eco-friendly hair crosslinking method using visible light and non-toxic chemicals caused less damage and improved mechanical properties compared to traditional thioglycolic acid treatment.

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Community Join

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community venting about lack of visible results from the treatment

in Chat 20 upvotes 1 year ago

The user is frustrated with the lack of visible hair regrowth after 7-8 months of using finasteride and minoxidil, despite initial vellus hair growth. Others suggest patience, switching to oral minoxidil, or using additional treatments like dermastamping, microneedling, and red light therapy.

community Sharing my progress from march 1 to today as people said I just manipulated the lighting.

in Progress Pictures 55 upvotes 5 months ago

The conversation is about OP's hair regrowth progress using dutasteride, 5% minoxidil, dermarolling, ketoconazole, adapalene, and vitamin D. Some users doubt the progress, attributing it to longer hair and lighting, while others congratulate OP on the visible improvement.

community 6 months 1mg finasteride daily + minoxidil

in Progress Pictures 77 upvotes 1 month ago

A 36-year-old user shared progress pictures after 6 months of using 1mg finasteride daily and 5% minoxidil inconsistently, reporting improved hair density and coverage. Responses varied, with some users noting visible improvement and others attributing changes to lighting differences.

community 6 months fin, min, dermastamp, RLT

149 upvotes 1 year ago

The user has been using finasteride, minoxidil, a dermastamp, and red light therapy for six months with no visible improvement since the three-month mark. Other users noted improvement, particularly in the left temple area, and encouraged the user to continue.

community March 1st and May 1st. Started treatment February 1st.

in Progress Pictures 17 upvotes 1 year ago

Hair density and color improved with 1mg oral finasteride, 3mg oral minoxidil, red light therapy, biotin, and microneedling. Visible results seen in 3 months.

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Learn

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learn Overview

learn Rapamycin

Are there any visible side effects when using rapamycin cream or serum on the scalp? Visible side effects may include skin irritation or redness when using rapamycin on the scalp.

learn Stem Cell Factor

When should you expect visible hair improvement from stem cell factor treatments? Visible hair improvement from stem cell factor treatments may take several months.

learn Hair Transplant

Will there be visible scarring after a hair transplant? Hair transplants can leave scars, but FUE typically results in minimal, nearly invisible ones.

learn Pyrilutamide

How long does it take to see visible results when using pyrilutamide topically? No published trial reports when pyrilutamide users first notice a change; its sponsor's studies measured results at 24 weeks, and all of those figures come from company announcements rather than peer-reviewed papers. Pyrilutamide is an unapproved experimental compound.

learn Procyanidin

How long should Procyanidin be used before seeing visible improvements in hair volume or density? The two published human trials of 1% topical procyanidin B-2 measured results at four and six months, so any visible change would take at least that long. Both were small, industry-run studies in men only, and procyanidin is not an approved hair-loss treatment.

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