Laser Hair Removal May Make You Hairier

It sounds impossible, but it's a well-documented reality: laser hair removal can sometimes cause more hair to grow, not less.

What Is Paradoxical Hypertrichosis?

Paradoxical hypertrichosis occurs when laser treatment stimulates dormant hair follicles in the treated area, causing them to produce new, visible hair. Instead of the expected reduction, clients notice increased hair density, often thicker and darker than before.

Research suggests this affects up to 10% of laser clients, though the actual number may be higher as many cases go unreported.

Who's Most at Risk?

Certain factors increase the likelihood of paradoxical hypertrichosis:

• Hormonal conditions like PCOS or thyroid disorders
• Darker skin tones when improper laser settings are used
• Facial areas, particularly the cheeks, jawline, and neck
• Upper arms and shoulders
• Treatments with insufficient energy that heat follicles enough to stimulate them but not enough to destroy them

Why It Happens

The exact mechanism isn't fully understood, but the leading theory is that sub-threshold laser energy (insufficient to destroy follicles) instead stimulates dormant follicles into active growth. The heat essentially "wakes up" follicles that were previously inactive.

What to Do If It Happens

If you've experienced increased hair growth after laser treatment, don't panic. The new growth responds well to electrolysis treatment. Many of our clients come to us specifically after experiencing paradoxical hypertrichosis from laser treatments. Electrolysis carries zero risk of this side effect because it treats follicles individually rather than with broad-spectrum energy.