Which characteristic makes laser hair reduction a preferred method over other hair removal options?

• A. Coarse, Dark Hair
• B. Fine, Light Hair
• C. Gray Hair
• D. Very Short Hair

Answer: (A)

Laser energy targets pigment in hair. The more pigment and thickness the hair has, the more energy is absorbed and converted to heat to damage the follicle. Coarse, dark hair contains a lot of melanin and a thick shaft, so it absorbs laser energy very efficiently and responds best to treatment. Fine, light hair has less pigment, so it doesn’t absorb as much energy and is less effectively treated. Gray hair has little to no pigment, making the laser much less effective. Very short hair doesn’t change pigment content or absorption, so it doesn’t improve outcomes. That combination—high pigment and thickness—is why coarse, dark hair makes laser hair reduction the most effective option.