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What causes dark underarms and how to treat them safely?
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Skin & Hair Concerns
Question #30031
16 hours ago
16

What causes dark underarms and how to treat them safely? - #30031

Client_f39dd1

Hello Doctor, I have dark underarms for a long time. I want to know the reason and the best treatment to remove it safely. Sometimes the skin feels rough and darker after shaving. Please guide me about creams or treatments that may help.

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Doctors' responses

Dr. Bharat Joshi
I’m a periodontist and academician with a strong clinical and teaching background. Over the last 4 years and 8 months, I’ve been actively involved in dental education, guiding students at multiple levels including dental hygienist, BDS, and MDS programs. Currently, I serve as a Reader at MMCDSR in Ambala, Haryana—a role that allows me to merge my academic passion with hands-on experience. Clinically, I’ve been practicing dentistry for the past 12 years. From routine procedures like scaling and root planing to more advanced cases involving grafts, biopsies, and implant surgeries. Honestly, I still find joy in doing a simple RCT when it’s needed. It’s not just about the procedure but making sure the patient feels comfortable and safe. Academically, I have 26 research publications to my credit. I’m on the editorial boards of the Archives of Dental Research and Journal of Dental Research and Oral Health, and I’ve spent a lot of time reviewing manuscripts—from case reports to meta-analyses and even book reviews. I was honored to receive the “Best Editor” award by Innovative Publications, and Athena Publications recognized me as an “excellent reviewer,” which honestly came as a bit of a surprise! In 2025, I had the opportunity to present a guest lecture in Italy on traumatic oral lesions. Sharing my work and learning from peers globally has been incredibly fulfilling. Outside academics and clinics, I’ve also worked in the pharmaceutical sector as a Drug Safety Associate for about 3 years, focusing on pharmacovigilance. That role really sharpened my attention to detail and deepened my understanding of drug interactions and adverse effects. My goal is to keep learning, and give every patient and student my absolute best.
4 hours ago
5

Hello dear I think it is physiological melanotic pigmentation Please do not worry and follow instructions below.

Medications: 1. Topical Treatments -Benzoyl Peroxide (2.5–5%) twice a day for week Salicylic Acid, Adapalene 0.1% can also be given as additive medications. 2.Clindamycin 1% Clindac A ,Tretinoin ( if already not taken). 3.Azelaic Acid 10 percent for two weeks. 4. Oral Medications -tablet Doxycycline 1 month twice a day for max 5 days or Tab Minocycline ( take precautions to avoid in pregnancy) 5.Oral contraceptives - Diane-35 with addition of Spironolactone on recommendation only by gynacologist in person only

Supportive medications Niacinamide serum –antiinflammatory in nature twice daily for 1 week In addition use aloevera - tulsi solution to apply topically for 1 month

In case of no improvement in 1 month, kindly consult dermatologist in person for better clarification Regards

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Dr. Arsha K Isac
I am a general dentist with 3+ years of working in real-world setups, and lemme say—every single patient teaches me something diff. It’s not just teeth honestly, it’s people… and how they feel walking into the chair. I try really hard to not make it just a “procedure thing.” I explain stuff in plain words—no confusing dental jargon, just straight talk—coz I feel like when ppl *get* what's going on, they feel safer n that makes all the difference. Worked with all ages—like, little kids who need that gentle nudge about brushing, to older folks who come in with long histories and sometimes just need someone to really sit n listen. It’s weirdly rewarding to see someone walk out lighter, not just 'coz their toothache's gone but coz they felt seen during the whole thing. A lot of ppl come in scared or just unsure, and I honestly take that seriously. I keep the vibe calm. Try to read their mood, don’t rush. I always tell myself—every smile’s got a story, even the broken ones. My thing is: comfort first, then precision. I want the outcome to last, not just look good for a week. Not tryna claim perfection or magic solutions—just consistent, clear, hands-on care where patients feel heard. I think dentistry should *fit* the person, not push them into a box. That's kinda been my philosophy from day one. And yeah, maybe sometimes I overexplain or spend a bit too long checking alignment again but hey, if it means someone eats pain-free or finally smiles wide in pics again? Worth it. Every time.
1 hour ago
5

Hello

Dark underarms are commonly caused by friction, frequent shaving, buildup of dead skin, sweating, irritation from deodorants, obesity, hormonal changes, or a condition called acanthosis nigricans which can be associated with insulin resistance. Roughness after shaving is very common because shaving can irritate and thicken the skin over time.

Try to avoid harsh shaving and consider trimming or waxing if your skin tolerates it. Use gentle soap, keep the area dry, and avoid deodorants with strong fragrance or alcohol if they irritate your skin.

👍Creams that may help safely include mild lactic acid or glycolic acid lotions, niacinamide, azelaic acid, kojic acid, or low-strength retinol at night.

🛑 Moisturizing regularly is important. Do not use strong steroid creams or bleaching creams without medical supervision because they can damage the skin.

If the darkness is very thick, velvety, spreading to the neck/groin, or associated with weight gain or irregular periods, you should get checked for diabetes or insulin resistance. A dermatologist can also offer safer treatments such as chemical peels or laser therapy if needed.

Take care Feel free to ask

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