Razor burn on chest skin and armpit razor burn come from the same few things: shaving long hair without trimming first, hair that grows in several directions, and skin that rubs and sweats all day. Trim first, shave with the grain using a sharp blade, and calm the skin right after shaving, and both areas stay far calmer. Wait before you put on deodorant, and keep fragrance and alcohol off the freshly shaved skin.
I am a barber. Most of my work is faces and necks, but men ask me about their chest and armpits more and more. The rules are the same as for the neck, with a few twists. Here they are.
Why your chest and armpits react to a razor.
A razor scrapes off a thin layer of skin along with the hair. That happens everywhere you shave. But the chest and armpits add problems your face does not have.
The hair is longer and coarser.
Most men shave their face every day or two. They shave their chest or armpits after weeks of growth. Long, thick hair clogs the blade and gets pulled instead of cut. The blade then drags across the skin.
The hair grows in more than one direction.
Armpit hair often grows in two or three directions in a small space. Chest hair can swirl around the nipples and change direction over the breastbone. If you shave in one straight line, you go against the grain in part of the area without noticing.
The skin moves, folds and rubs.
Armpit skin folds every time you move your arm. Your shirt rubs your chest all day. Friction on freshly scraped skin keeps the irritation going for hours.
Sweat and deodorant hit the skin right away.
Armpits sweat. Most men put on deodorant straight after shaving. Many deodorants contain alcohol or fragrance, and both sting on a fresh shave. Sweat and salt on scraped skin make it worse.
Know whether it is razor burn, bumps or something else.
Razor burn shows up fast: red, hot, stinging skin right after shaving. Razor bumps and ingrown hairs show up two to four days later, as the hair grows back and gets trapped. On the chest and armpits, bumps are very common, because the hair is coarse and often curly.
Small itchy spots with pus around the hairs can be folliculitis, an infection of the hair roots. It often shows up on the chest and back after shaving or heavy sweating. Painful lumps deep under the skin of the armpit that keep coming back are a different thing again. Both of those need a doctor, so read the last section before you buy anything.
Trim before you shave.
This is the one step most men skip, and it fixes half the problem.
- Use an electric trimmer with a short guard.
- Trim the chest or armpit hair down to stubble.
- Do this on dry hair, before the shower.
Now the razor only has to cut short stubble. It glides instead of tugging. You also see the direction the hair grows much more clearly.
Also ask yourself if you need to shave at all. A trimmer with no guard, or the shortest guard, leaves a very short, clean look with almost no irritation. Many men who get razor burn on the chest are happier trimming and never shaving.
How to shave your chest without razor burn.
- Trim first. Down to short stubble.
- Soften the hair. Shave at the end of a warm shower, after the hair has soaked for a few minutes.
- Use real shaving cream or gel. Give it a minute to sit.
- Check the direction. Run your hand over the stubble. Shave the way it feels smooth.
- Stretch the skin. Use your free hand to pull the skin flat, especially around the nipples and over the breastbone.
- Short, light strokes. Let the razor glide. Rinse the blade after every few strokes.
- Go around the nipples. Do not shave over them. Trim that hair instead.
- One pass is enough. A second pass, if you must, should be with the grain again.
How to shave your armpits without razor burn.
- Trim first. Armpit hair is long and coarse. Take it down to stubble.
- Shave at the end of a warm shower. Soft hair, soft skin.
- Raise your arm high. Put your hand on the back of your head. This stretches the skin flat.
- Find the directions. Look in the mirror. Most armpits have hair growing up, down and sideways in different zones.
- Shave each zone with its grain. Short strokes, light pressure.
- Use a fresh blade. A dull blade in the armpit is a recipe for razor burn.
- Do not go over the same spot again and again. If a patch stays rough, leave it for next time.
The American Academy of Dermatology advises changing your blade or throwing out a disposable razor after 5 to 7 shaves. Body hair is often long and coarse by the time you shave it, so a blade used on the chest can go dull sooner. I also keep one razor for the face and another for the body, so neither gets dull twice as fast.
The minute after shaving decides the next two days.
Most men put all their care into the shave and none into what comes after. That minute matters just as much.
Rinse cold and pat dry.
Cold water washes off the cream and cools the skin. Pat dry with a clean towel. Do not rub, especially in the armpit.
Calm the skin before you cover it.
This is where I use the same thing on the body that I use on a client's neck: a natural stone, the way barbers finish a shave. Wet the stone, run it over your chest or armpits, wait about a minute, and rinse with cold water.
It cools and tightens the surface, calms the sting and reduces the look of redness. It is antibacterial and has no alcohol and no fragrance. In the armpit it does a second job: it neutralises the bacteria that cause body odour, so it works as a natural deodorant. It does not stop you from sweating.
Expect a short sting where the blade caught the skin. On the armpit, that first sting can feel sharper, because the skin there is thin and folded. It fades in seconds. That is Flint, the stone I sell, and the body is one of the places men are most surprised by it.
Wait with deodorant.
If you use a regular deodorant or antiperspirant, give your armpits time before you put it on. The easiest trick is to shave your armpits in the evening and put deodorant on the next morning. Choose a fragrance free one if your skin reacts.
Wear something loose.
A tight shirt or compression top rubs freshly shaved skin. On shaving days, wear something loose and cotton, and skip the gym if you can. Sweat and friction on a fresh shave are the fastest way to get bumps.
Moisturise if the skin feels tight.
Chest skin can feel dry after shaving. A plain, fragrance free moisturiser helps. Keep it light in the armpit, where heavy creams trap sweat.
How to keep bumps from coming back.
- Exfoliate gently, but not on shaving day. Two or three days after shaving, use a soft washcloth or a gentle scrub to clear dead skin so hairs can grow out instead of curling back in.
- Do not pick at bumps. Picking opens the skin to bacteria and can leave dark marks.
- Find your rhythm. Some men do better shaving the body every two or three days, so the hair never gets long. Others do better with a week off between shaves. Watch your skin and pick one.
- Keep your razor clean and dry. Do not leave it in the shower, where bacteria grow on a wet blade.
When to see a doctor.
Most razor burn on the chest and armpits settles within a few days. See a doctor or dermatologist if:
- Spots fill with pus, spread, or keep coming back across your chest and back. That can be folliculitis, which sometimes needs prescription treatment.
- You get painful, deep lumps in your armpits or groin that come back again and again, or leave scars. That can be a condition called hidradenitis suppurativa, and a dermatologist should look at it early.
- The skin gets hot, swollen and more painful each day, or you get a fever.
- Bumps leave dark marks or hard scars, which is more common with dark, curly hair.
Shave the body the barber's way.
Trim first, shave with the grain, and take care of the minute after shaving. That is most of the fix for razor burn on the chest and in the armpits. If you want one thing for your neck, chest and armpits that calms the skin without alcohol or fragrance, try Flint, the barber's stone for after shaving. One stone lasts up to two years of daily shaves, and if your skin is still red after 90 days, you get a full refund and keep it.
Frequently asked questions
How long does armpit razor burn last?
Armpit razor burn usually fades within one to three days. It can last longer if deodorant, sweat or a tight shirt keeps irritating it. Keep the area clean and dry, wait with deodorant, and do not shave it again until it has settled.
Should I shave or trim my chest?
If you get razor burn or bumps on your chest, try trimming first. An electric trimmer with a short guard gives a clean look with far less irritation. Shave only if you want fully smooth skin, and always trim before you shave.
Can I put deodorant on right after shaving my armpits?
It is better to wait. Many deodorants and antiperspirants contain alcohol or fragrance, which sting freshly shaved skin. Shave in the evening and apply deodorant the next morning, or choose a fragrance free one.
Why do I get red bumps on my chest after shaving?
Usually because the hair was long, the blade was dull, or you shaved against the grain. Chest hair is coarse and often curly, so cut hairs can curl back into the skin. If the bumps have pus or keep spreading, see a doctor, because it may be folliculitis.
Can I use the same razor on my face and body?
You can, but a blade used on coarse body hair goes dull faster. A dull blade on your neck means more razor burn. Many men keep one razor for the face and one for the body, and change both blades often.
Sources
- American Academy of Dermatology. How to shave. aad.org.
- American Academy of Dermatology. How to prevent razor bumps. aad.org.
- American Academy of Dermatology. Hidradenitis suppurativa: overview. aad.org.
- DermNet. Bacterial folliculitis. dermnetnz.org.
- Cowley K, Vanoosthuyze K. Insights into shaving and its impact on skin. British Journal of Dermatology, 2012;166 Suppl 1:6 to 12.
- European Commission, Scientific Committee on Consumer Safety. Opinion on fragrance allergens in cosmetic products, SCCS/1459/11, 2012.
