Science of Laser Hair Removal in SLOW MOTION

TL;DR

Laser hair removal uses infrared lasers to target the melanin in dark hair, heating it to destroy the germ cells in the follicle that produce the hair.

Transcript

Uh, we are driving to a very strange location somewhere I have never been and it's because of the woman in the back seat This is Dianna, 'Physics Girl' Yeah, uh, we are gonna go get a consultation, for something very special, right now It is... look, I'm not gonna keep in suspense Laser hair removal. We wanna talk about the science that makes laser... Read More

Key Insights

• 👱 Laser hair removal uses infrared lasers to target the melanin in dark hair, heating it to destroy the germ cells in the follicle that produce the hair.
• 🙂 Melanin absorbs a wide range of wavelengths of light, making it ideal for protecting the skin against the sun's harmful rays.
• 😮 Cells suffer damage when their temperature rises above 60 degrees Celsius, leading to the destruction of the germ cells in hair follicles.
• 👱 Laser hair removal is most effective for dark hair and light skin due to the higher absorption of laser energy by melanin.
• 👱 Shaving before laser hair removal helps to prevent unnecessary burning and surface burns.
• 👱 Laser hair removal is a popular cosmetic procedure and the most requested by individuals.
• 👱 Laser hair removal can cause laser plume, which is the smoke that is released during the procedure.

Questions & Answers

Q: How does laser hair removal work?

Laser hair removal works by targeting the melanin in dark hair, using infrared lasers to heat the hair and destroy the germ cells in the follicle that produce the hair.

Q: Why is it more effective for dark hair and light skin?

Laser hair removal is more effective for dark hair and light skin because melanin absorbs the laser light more than other molecules in the skin like water and oxyhemoglobin, allowing it to target the hair without damaging the surrounding skin.

Q: Can laser hair removal cause burns?

Laser hair removal can cause burns if not performed properly. The use of ultrashort pulses helps prevent the heat from spreading too far into the surrounding area, reducing the risk of burns.

Q: Does shaving before laser hair removal affect the procedure?

Shaving before laser hair removal is typically recommended as it prevents unnecessary burning of external hair and reduces the risk of hot hair landing on the skin and causing surface burns.

Summary & Key Takeaways

• Laser hair removal uses infrared lasers to heat and destroy the germ cells in hair follicles, preventing hair regrowth.

• Melanin in dark hair absorbs the laser light, while the surrounding skin absorbs less energy.

• The goal of laser hair removal is to cause enough damage to the cells in the follicle to prevent hair regrowth.