Can You Shave Before or After Underarm Laser Hair Removal?

Laser hair removal can be a game-changer when it comes to managing unwanted underarm hair. But with long-term smoothness comes a lot of questions—especially about shaving. Should you shave before your laser session? Can you shave after? What’s the right timing, and what happens if you don’t follow it?

This guide breaks down everything you need to know about shaving before and after underarm laser hair removal so your skin stays safe, smooth, and irritation-free.

How Long Does Underarm Laser Hair Removal Last?

Why Does Shaving Matter in Laser Hair Removal?

Laser hair removal works by targeting the pigment (melanin) in the hair follicle. The laser's heat damages the follicle to slow down or stop future growth. But for the laser to hit the follicle directly and not waste energy on hair above the skin, the hair must be short (i.e., shaved)—not plucked or waxed.

This is where shaving comes in: it removes surface hair without affecting the root.

Can You Shave Before Underarm Laser Hair Removal?

Yes, and you absolutely should. But there's a right way and a wrong way to do it.

How Long Before Laser Should You Shave?

Ideally, 24 to 48 hours before your appointment. This gives your skin time to recover from any minor irritation or micro-cuts caused by shaving.

Why Shave Before Laser?

• Prevents burns: If hair is above the skin, the laser can burn it and cause surface burns or redness.
• Improves effectiveness: Shaved hair allows the laser to directly target the follicle under the skin.
• Reduces discomfort: Longer hairs can absorb more heat and cause a stinging sensation.

What Happens If You Don’t Shave?

• You might get rescheduled. Some clinics won’t proceed if the area isn’t properly shaved.
• You might experience burns or irritation.
• Less effective results. The laser won’t reach the follicle as efficiently if it’s blocked by long hair.

What to Avoid When Shaving Before Laser:

• Don’t dry shave—always use a shaving gel or cream.
• Avoid exfoliating and shaving at the same time, especially right before treatment. Over-exfoliation can irritate your skin.
• Use a clean, sharp razor to prevent nicks and reduce the risk of infection.

Can You Shave After Underarm Laser Hair Removal?

Yes, but you’ll need to wait.

When Is It Safe to Shave After Laser?

Wait at least 4 to 5 days, or until the skin fully recovers from any redness, sensitivity, or swelling.

Your skin may be a little tender after a laser session, and shaving too soon can cause:

• Skin irritation
• Razor burn
• Inflammation or ingrown hairs

Why Might You Need to Shave After Laser?

• Laser doesn’t remove all hair in one session—some hairs will grow back.
• After a few days, the treated hair will begin to shed—this can look like regrowth but is actually the body pushing dead hairs out.
• If real regrowth occurs (between sessions), shaving is the only safe method between laser treatments.

What Not to Do Before and After Underarm Laser Hair Removal

What Hair Removal Methods to Avoid Before and After Laser

• No waxing, threading, or plucking at least 4 weeks before your appointment. These remove the hair root, making the laser ineffective.
• No depilatory creams (like Veet or Nair) especially right after your treatment. These are harsh and can irritate sensitized skin.

Tips for Safe Shaving After Underarm Laser:

• Wait until redness fades
• Use a soothing, fragrance-free shaving gel
• Moisturize after shaving
• Wear loose clothing to avoid friction on freshly shaved skin
• Avoid hot showers or saunas for 24-48 hours

Final Thoughts: Shaving Is Your Laser Hair Removal Friend

Yes, you can (and should) shave both before and after underarm laser hair removal—with proper timing. Shaving helps the laser do its job more effectively and keeps your skin safe from irritation. Just remember: shaving is the only approved method of hair removal before and during your laser treatment journey.

So, if smooth underarms are your goal, grab that razor—but use it wisely.