Why shave — and never wax
The laser targets pigment inside the hair shaft, specifically the portion still attached to the follicle beneath the skin. Shaving cuts the hair at the surface but leaves the shaft and follicle intact. Waxing, plucking, threading, and epilating pull the entire hair — follicle and all — out of the skin. When that happens, there is nothing left for the laser to target on that session.
The single biggest mistake between sessions
When to shave
The sweet spot is 12–24 hours before your appointment. This window:
- · Gives skin time to calm down from any minor razor irritation.
- · Leaves the hair short enough to avoid surface burns.
- · Keeps the follicle full of pigment for the laser to target.
Shaving days ahead means longer stubble at the appointment. Shaving immediately before means the skin may still be irritated.
How to shave without irritation
- · Shave after a warm shower — softer hair, more pliable skin.
- · Use a fresh, sharp blade. Dull blades cause razor burn.
- · Use a fragrance-free shave gel or cream — never dry-shave before laser.
- · Shave with the grain to minimize irritation.
- · Skip harsh aftershaves. A mild, fragrance-free moisturizer is fine.
First session and forgotten-to-shave situations
If it's your first session and you're uncertain, come in shaved. If you forgot, tell reception on arrival — most programs can shave the area for you (sometimes with a small charge). Never treat unshaved. Never wax "just to be clean" — that undoes the point of the session.
Full prep protocol lives in How to Prepare for Laser Hair Removal.
Key takeaways
- · Shave 12–24 hours before your session — no more, no less.
- · Never wax, pluck, or thread between sessions.
- · A fresh, sharp blade with plenty of moisture avoids irritation.
- · Trimming is fine but only shaving gives the cleanest treatment surface.
- · If you forgot to shave, ask — don't skip and don't wax.