Underarm hair removal is a personal choice, and for those who choose it, the underarm is one of the trickier areas to manage. The skin is thin, folded and often damp. Hair grows in several directions. Deodorant goes straight on top. A little technique and the right aftercare prevent most stinging, bumps and dark marks.
Why underarms need extra care
- The skin is delicate and creased.
- Hair is coarse, and it grows in more than one direction.
- Sweat, friction from clothing and daily deodorant all add irritation.
- The area is warm and moist, which favors inflamed follicles.
Methods compared
| Method | Lasts | Pain | Notes for underarms |
|---|---|---|---|
| Shaving | 1 to 3 days | None | Quick; stubble returns fast; risk of razor burn |
| Trimming | Days | None | Gentlest; leaves short hair |
| Hair removal cream | A few days to a week | None | Use a product made for underarms or sensitive areas; patch test |
| Waxing | 3 to 6 weeks | High, brief | Best done professionally at first; hair must be about 6 mm long |
| Epilating | 2 to 4 weeks | High at first | Use the sensitive-area cap; hold the skin taut |
| Laser or IPL | Long-term reduction after several sessions | Moderate | Small area, so sessions are quick; works best on dark hair |
See Shaving vs Waxing vs Epilating: Key Differences for a general comparison.
How to shave underarms
- Shave at the end of a warm shower.
- Wash off any deodorant first. Residue clogs the blade.
- Apply shaving gel or cream.
- Raise your arm fully, with your hand behind your head, to flatten the skin.
- Use a sharp razor and short, light strokes. Because hair grows in different directions, shave downward first, then sideways, and upward only if needed.
- Rinse the blade often.
- Rinse the skin with cool water and pat dry.
Waxing and epilating underarms
- Make sure hair is the right length.
- Skin must be clean and completely dry. A light dusting of powder helps.
- Hold the skin firmly taut.
- Work in small sections.
- Expect small spots of blood the first few times. Coarse hairs have strong roots.
See Waxing Aftercare: What to Do After Hair Removal for aftercare.
Using a hair removal cream
Choose a formula labeled for underarms or sensitive skin. Do a patch test 24 hours before, follow the timing exactly, and do not apply it to freshly shaved or broken skin. Wait before using deodorant. See Hair Removal Cream: Patch Testing and How to Use It.
Aftercare
- Rinse with cool water, and pat dry.
- Wait before applying deodorant or antiperspirant. Applied to freshly shaved or waxed skin, it often stings. Shaving at night and applying deodorant in the morning solves this.
- Moisturize with a light, fragrance-free lotion.
- Wear loose tops for the rest of the day.
- Avoid heavy sweating, swimming and sun for 24 hours after waxing or epilating.
- Do not exfoliate for two days. Then exfoliate gently once or twice a week to prevent ingrown hairs.
Deodorant and sensitive underarms
If your underarms sting or itch regularly:
- Try a fragrance-free and alcohol-free deodorant.
- Apply antiperspirant to dry skin at night, when it works best and is less irritating.
- Stop using a product that causes a rash. Fragrance is a common cause of underarm dermatitis.
Dark underarms
Darker skin in the underarm is common, especially in medium and deep skin tones.
| Possible cause | What helps |
|---|---|
| Irritation from shaving, friction or deodorant leading to extra pigment | Gentler hair removal; fragrance-free products; loose clothing |
| Stubble visible under the skin | A method that removes hair from the root, or laser |
| A build-up of dead skin and product | Regular washing; gentle exfoliation |
| A velvety, thickened darkening | Can be linked to insulin resistance or hormones; see a doctor |
Avoid harsh scrubs, lemon juice and unregulated lightening creams. They irritate, and irritation makes darkening worse. Marks from irritation fade slowly once the cause is removed.
Common problems
- Razor burn: cool compress, fragrance-free moisturizer, no deodorant until it settles.
- Ingrown hairs: warm compresses, gentle exfoliation, a pause in hair removal. See Razor Burn vs Ingrown Hairs: Signs and Care.
- Painful lumps or boils that keep returning in the armpit need medical advice.
Considering longer-term reduction
If you are prone to ingrown hairs or irritation, laser hair removal is often effective for underarms, because the hair there is usually dark and coarse. See Laser Hair Removal vs IPL: Key Differences.
When to see a doctor
See a doctor for a rash that does not clear, swelling, pus, a painful lump, repeated boils, or a lump in the armpit that you can feel under the skin.
Related on ArniSun
- Shaving vs Waxing vs Epilating: Key Differences
- Razor Burn vs Ingrown Hairs: Signs and Care
- Waxing Aftercare: What to Do After Hair Removal
- Laser Hair Removal vs IPL: Key Differences
- Hair Removal Cream: Patch Testing and How to Use It
Sources and further reading
Frequently asked questions
Why do my underarms sting when I put on deodorant after shaving?
Shaving leaves tiny breaks in the skin, and alcohol or fragrance in deodorant irritates them. Shave at night, and apply deodorant the next morning.
How can I avoid bumps under my arms?
Use a sharp blade and shaving gel, shave with light strokes in several directions, wear loose clothing afterwards and exfoliate gently a couple of times a week.
Why are my underarms dark?
Common causes are irritation from shaving or deodorant, friction, and stubble showing through the skin. A velvety, thickened darkening should be checked by a doctor.