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Glossary Q-switched laser

emits high-intensity light pulses in nanoseconds for medical use

A Q-switched laser is a type of laser that emits high-intensity pulses of light in very short durations, typically in the nanosecond range. This technology is commonly used in medical and cosmetic procedures, such as tattoo removal and treatment of pigmented lesions, because it can target and break down pigments without causing significant damage to surrounding tissues.

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Research

5 / 1000+ results

research Comparison of the efficacy and safety of a picosecond alexandrite laser and a Q-switched alexandrite laser for the treatment of freckles in Chinese patients

19 citations , August 2018 in “Journal of the American Academy of Dermatology”

In this study, the researchers found that the picosecond pulsed alexandrite laser (PSAL) may be as effective and safe as the Q-switched alexandrite laser (QSAL) for treating freckles in Chinese patients.

research Comparison between isolated Q-switched laser treatment versus association with microneedling on tattoo removal: Case report

May 2017 in “Journal of The American Academy of Dermatology”

Combining microneedling with Q-switched laser treatment for tattoo removal did not improve results and caused more pain.

research Crescent‐shaped incisional cuts: An unusual complication with Q‐switched Nd:YAG 1064 laser tattoo removal

1 citations , November 2020 in “Journal of Cosmetic Dermatology”

This letter to the editor discusses an unusual complication, crescent-shaped incisional cuts, observed with Q-switched Nd:YAG 1064 laser tattoo removal and reports no new clinical results.

research Q-switched Nd:YAG 1064-nm laser for the treatment of acne-induced postinflammatory hyperpigmentation

February 2009 in “Journal of The American Academy of Dermatology”

Fractional infrared technology is effective and safe for treating cervical laxity.

research Laser-assisted hair removal: Side effects of Q-switched Nd:YAG, long-pulsed ruby, and alexandrite lasers

294 citations , August 1999 in “Journal of the American Academy of Dermatology”

This study observed that the majority of side effects from laser-assisted hair removal were associated with ruby and alexandrite lasers, particularly in patients with tanned or darker skin types.

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community 7 Month Hair Progress (0.5 mg dut only, diffuse thinning)

715 upvotes 2 years ago

An 18-year-old male switched from topical finasteride and minoxidil to oral dutasteride for diffuse hair loss and saw improvement without side effects, despite experiencing scalp itch and shedding. Commenters noted significant hair regrowth and were surprised by his young age and appearance.

community How many of you are on fin and how many are on dut

in Finasteride/Dutasteride 38 upvotes 1 year ago

Many people use finasteride and dutasteride for hair loss, with some switching due to cost or effectiveness. Minoxidil is also commonly used, and side effects like weaker erections or ball pain are reported by some.

community Minoxidil works only with Retinoic acid

314 upvotes 1 year ago

Minoxidil is more effective when combined with retinoic acid, such as tretinoin or tazarotene, enhancing hair growth. Some users experience significant regrowth, while others see minimal effects or side effects.

community UPDATE: now 5 months on Dut and continuing to regress aggressively

in Finasteride/Dutasteride 218 upvotes 1 year ago

The user is experiencing significant hair loss after switching from finasteride to dutasteride for five months. Suggestions include that the hair loss might be a normal shedding phase, with some recommending continuing the treatment for up to 24 months or considering alternatives like RU58841.

community 2 year progress with Dut after a decade of Fin

154 upvotes 4 months ago

A user shared their hair loss journey, using finasteride since age 18 and adding dutasteride at 30, which halted hair loss and promoted regrowth. They take finasteride daily and dutasteride three times a week, experiencing reduced libido and drier skin as side effects.

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