Can You Shave Before or After Underarm Laser Hair Removal?
Youmna Rehman • July 30, 2025
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.
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Nervous about your first underarm laser session? Learn exactly how to prepare—from what to avoid weeks before to what to do on the day. Expert tips for smoother, safer results.
If you’ re thinking about getting laser hair removal for your underarms, one of the first questions you’ll likely have is: “How long does the session actually take?” The short answer? Not long. But there’s a lot more to it than just time on the clock. From prep to post-care, each session involves specific steps that affect not only how long you’ll be in the clinic but also how effective your results will be. This guide breaks it all down, so you know exactly what to expect. What Not to Do Before and After Underarm Laser Hair Removal Why Laser Hair Removal for Underarms Is So Popular The underarms are one of the most commonly treated areas for laser hair removal, and it’s easy to see why. The area is small, which means treatments are quick. Plus, the hair tends to be darker and coarser, making it more responsive to the laser. For many people, a few sessions can mean smoother skin and a serious reduction in regrowth. How Long Does the Actual Laser Session Take? Most underarm laser sessions take about 10 to 15 minutes . That’s it. This includes the time it takes for the technician to prepare the skin, adjust the laser settings, and apply the treatment to both underarms. If you’ve shaved properly beforehand (which is usually recommended), the session will go even faster. Here’s a breakdown of what usually happens during that time: Quick skin check by the technician Wiping the area clean if needed Application of the laser pulses (this usually takes just 5-7 minutes for both underarms) Optional application of soothing gel or aloe afterward You’ll be in and out in less time than it takes to scroll Instagram. Factors That Can Affect Session Duration While 10–15 minutes is the average, a few things can make your session take slightly longer or shorter. Skin and Hair Type : Coarser or denser hair might require more laser passes. Pain Tolerance : If you’re sensitive to the laser sensation, you might need breaks. Technician Technique : Some clinics use faster machines or more experienced technicians, which can speed things up. Pre-Treatment Preparation : If you forgot to shave or have residual deodorant on your skin, the technician may need to clean or prep the area, adding a few minutes. What About the First Appointment? Your first laser hair removal appointme nt will likely be a bit longer — around 20 to 30 minutes total. That’s because the technician will go over your medical history, explain the procedure, perform a patch test, and answer any questions you may have. But once you get into the routine of regular sessions, the actual laser part rema ins quick. Does Underarm Laser Hair Removal Really Work? How Many Sessions Will You Need? Most people need 6 to 8 sessions for optimal results, spaced about 4 to 6 weeks apart. Some people see a significant reduction in hair growth after just a few sessions, but consistency is key. The speed of the sessions makes it easier to stick to your treatment plan. Can You Schedule During a Lunch Break? Yes, and that’s one of the best things about underarm laser hair removal . Since the session is so short, it’s ideal for squeezing in between classes, errands, or during a break from work. There's no downtime required, so you can go back to your day immediately. Aftercare: Does That Add Time? After your session, you might experience mild redness or a warm sensation on your skin. Applying aloe vera or a soothing lotion is usually enough. The aftercare process is simple and doesn’t take much time, but avoid applying deodorant or taking hot showers for at least 24 hours. Laser vs. Other Hair Removal Methods (Time Comparison) If you’re used to shaving every few days or waxing every few weeks, laser hair removal is a major time-saver in the long run. Here’s how it compares: Shaving : Takes 3–5 minutes per session, multiple times a week Waxing : Takes about 30 minutes every 2–4 weeks Laser : 10–15 minutes every 4–6 weeks, and long-term results after 6–8 sessions Final Thoughts Laser hair removal for underarms is one of the quickest cosmetic treatments available. In just 10 to 15 minutes per session, you’re working toward long-lasting smoothness and ditching the hassle of razors or waxing strips. Whether you’re fitting it into a busy schedule or just tired of constant upkeep, underarm laser is quick, effective, and surprisingly convenient.
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