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GlossaryFitzpatrick Skin Types

system categorizes skin by its reaction to UV light

The Fitzpatrick Skin Types, also known as the Fitzpatrick Scale or Fitzpatrick Classification, is a system used to categorize human skin based on its response to ultraviolet (UV) light. Developed by Dr. Thomas B. Fitzpatrick in 1975, it classifies skin into six types, ranging from Type I (very fair skin that always burns and never tans) to Type VI (very dark skin that never burns and tans very easily). This classification helps dermatologists assess skin cancer risk, plan treatments, and predict how skin will react to various procedures.

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research Alexandrite Laser Hair Removal Is Safe For Fitzpatrick Skin Types IV-VI

90 citations , February 2000 in “Dermatologic Surgery”

Alexandrite laser hair removal is safe for darker skin tones.

research Quantitative Morphometric Analysis of Intrinsic and Extrinsic Skin Ageing in Individuals with Fitzpatrick Skin Types II–III

4 citations , January 2023 in “Experimental dermatology”

Skin thickness decreases and structural changes occur with both ageing and sun exposure in certain skin types.

research Hair Removal Options in Darker Skin Types Through Laser Innovation and Energy-Based Modalities

October 2025 in “International Journal of Research in Dermatology”

New laser technologies and methods are safer and more effective for hair removal on darker skin tones.

research Efficacy of Photobiomodulation Therapy for the Off-Label Treatment of Alopecia in Skin Types V-VI

April 2021 in “Journal of Investigative Dermatology”

Photobiomodulation therapy may help treat hair loss in people with darker skin, but more research is needed.

research Effect of Skin Type on Efficacy of Laser Treatment for Androgenetic Alopecia: A Review of the Literature

January 2023 in “Skin appendage disorders”

Laser treatment for hair loss works equally well on different skin types, but more research is needed for very dark skin.

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community Comprehensive Microneedling Guide

in Microneedling 291 upvotes 3 years ago

Microneedling for hair restoration involves daily use of a 0.3 mm device and weekly use of a 0.5 mm device. Combining microneedling with Minoxidil can enhance hair growth.

community Derma told me to quit finastirde

in Finasteride/Dutasteride 261 upvotes 3 days ago

A dermatologist advised stopping finasteride after 3-6 months, but many users disagreed, stating it should be used indefinitely to maintain hair. Users recommended finding a new dermatologist due to the perceived misinformation.