Factors that make it worse
Sometimes, external or internal factors can make the imbalance even more noticeable.
- Hormonal changes: Fluctuations in hormones (like during stress, menstruation or menopause) can change your sweat composition.
- Stress: Emotional sweat from your apocrine glands are richer in proteins. Basically a buffet for odor-causing bacteria.
- Thyroid conditions: An overactive thyroid can cause excessive sweating (called hyperhidrosis), sometimes unevenly distributed.
- Clothing choices: Tight sleeves or synthetic fabrics can lock in sweat, especially on your more active side.
- Antiperspirant application: Applying unevenly or missing spots can make one armpit less protected from sweat and odor.
How to fix uneven armpit odor
The fix starts with balance. Restoring your skin’s microbiome, improving hygiene habits, and using the right deodorant.
Switch to an antibacterial antiperspirant
Choose a deodorant designed to target odor-causing bacteria while keeping you dry. Products like Degree Advanced Dry Protection use MotionSense® technology to release bursts of freshness every time you move.
Exfoliate regularly
Use a gentle scrub or exfoliating cloth once or twice a week to remove buildup and dead skin cells.
Reset your underarm balance
After washing with a good body wash use a gentle, skin-friendly cleanser or toner—such as diluted apple cider vinegar—to help refresh and care for the delicate underarm area.
Reapply strategically
If one side sweats more, it’s okay to apply an extra swipe of antiperspirant there. Just make sure your skin is dry first for maximum protection.
When to seek expert advice
If the odor sticks around even after washing, reach out to a healthcare professional. Ongoing odor can signal an underlying issue like an infection or thyroid imbalance. A doctor can pinpoint the cause and guide you toward the right treatment.
FAQs
Why does my right armpit smell even after a shower?
When one armpit smells stronger than the other, it often comes down to differences in sweat gland activity, bacteria, or how you wash and apply deodorant. Your dominant arm tends to sweat more because it moves more, creating a warmer environment where odor-causing bacteria thrive. To help, make sure you’re washing thoroughly (especially after workouts), drying completely, and applying deodorant or antiperspirant evenly on both sides.
How can I reset my armpit pH?
Your skin naturally maintains a slightly acidic pH, which helps control bacteria and odor. To support this balance, stick with gentle cleansers and avoid harsh scrubs or alkaline soaps that can disrupt your skin barrier. Some people use a diluted apple cider vinegar rinse or pH-friendly body wash to help refresh the area, but consistency and mildness are key—never apply undiluted vinegar, and always moisturize afterward to avoid irritation.
What does thyroid sweat smell like?
There’s no single “thyroid smell,” but changes in hormone levels—including those linked to thyroid conditions—can sometimes affect how your sweat smells or how much you perspire. For example, an overactive thyroid (hyperthyroidism) may cause you to sweat more, which can intensify normal body odor. If you notice a sudden or persistent change in your sweat’s smell along with other symptoms (like weight changes, anxiety, or fatigue), it’s best to check in with a healthcare provider.
If one armpit keeps out-smelling the other, it’s your body’s way of saying something’s off-balance, but it’s totally fixable. With the right products, habits, and a little science on your side, you can keep both underarms fresh and in sync.
References
- American Society of Microbiology. Microbial Origins of Body Odor. 2021.
