Do you notice that your sweat has an unpleasant smell and wonder why? Although sweat itself is odorless, its contact with bacteria leads to the formation of a characteristic scent. In this article, we explain why sweat smells, which factors influence its intensity, and how to effectively neutralize body odor. You’ll also find out whether your diet can make things worse.

Sweating is a natural physiological process that regulates body temperature, helps eliminate metabolic waste, and maintains electrolyte balance. It’s a protective mechanism that prevents overheating and supports the proper functioning of the nervous and circulatory systems.

Contrary to common belief, fresh sweat is almost completely odorless - it’s made up mostly of water, mineral salts, and small amounts of proteins, fatty acids, and urea.

Only when sweat comes into contact with bacteria living on the skin, especially in warm, moist areas like the armpits, groin, or feet – its components break down, producing a strong and often unpleasant smell.

How does the sweating mechanism work?

Sweating occurs through the activity of sweat glands, which come in two main types: eccrine and apocrine.

• Eccrine glands are distributed evenly across the body and are responsible primarily for temperature regulation. They secrete mostly water and electrolytes – an odorless fluid that cools the body during heat or physical activity.
• Apocrine glands are found mainly in the armpits, groin, and around the nipples. Their secretion contains proteins and lipids, which serve as a perfect food source for bacteria living on the skin. It’s these bacteria that, by breaking down organic compounds in apocrine sweat, produce the characteristic body odor.

Why does sweat have an odor?

Sweat itself doesn’t smell. It’s the bacterial fermentation process that causes its distinctive odor.

Different bacteria, such as Corynebacterium spp. or Staphylococcus spp., naturally live on our skin. They break down the components of sweat, particularly the apocrine kind – producing volatile compounds, including fatty acids and sulfur compounds, which give off a strong smell.

Interestingly, every person has a unique skin microbiome, which means that body odor is highly individual and can differ significantly from one person to another.

What affects the intensity of sweat odor?

Genetics and the skin microbiome

Genes determine the number and activity of sweat glands and the chemical composition of sweat, which directly affects its odor. Some people inherit a tendency toward more intense or distinctive body odor.

Hygiene and cosmetics

Regular hygiene helps remove bacteria responsible for breaking down sweat. Skipping daily showers or changing clothes infrequently can lead to bacterial buildup and stronger body odor.

Diet and sweat odor

What you eat matters! Foods like garlic, onions, spicy spices, and alcohol can intensify sweat smell. A diet rich in processed foods or trans fats can also make body odor worse.

Hormones and stress

Hormonal fluctuations – such as those during puberty, menstruation, or menopause can increase sweat production and alter its smell. Stress and emotional tension have a similar effect.

Health conditions

Certain medical conditions including diabetes, liver or kidney diseases, and fungal infections can cause distinctive odors. Sometimes, body odor may even signal metabolic or hormonal imbalances.

Medications and supplements

Some medications, such as antidepressants or pain relievers, can alter the composition of sweat. Supplements containing garlic or B vitamins may also affect its smell.

How to effectively neutralize sweat odor

Feeling uncomfortable because of body odor? You’re not alone.

It’s a common issue, but one that can be managed effectively. With proper care, the right products, and a few lifestyle tweaks, you can make a huge difference.

1. Maintain consistent hygiene

• Wash your body daily, especially armpits, feet, and other sweat-prone areas. Use mild, antibacterial cleansers that don’t irritate the skin.
• Dry your skin thoroughly after bathing - moisture trapped in skin folds encourages bacterial growth.
• Wear breathable, natural fabrics like cotton or linen. They let your skin breathe, unlike synthetics that trap sweat and heat.

2. Choose the right deodorant

• Deodorants contain antibacterial agents that inhibit bacterial growth, as well as fragrance ingredients that mask odor.
• Antiperspirants contain aluminum salts that temporarily block sweat glands, reducing perspiration. Use them as directed to avoid irritation.

WHICH DEODORANT SHOULD YOU CHOOSE?

SHIELD ME DAILY – Everyday freshness

We all know the morning rush, quick workouts, or stressful presentations. That’s when you need a deodorant that simply works.

SHIELD ME DAILY was created to accompany you in your daily rhythm, keeping you fresh and confident when you need it most.

The formula combines natural ingredients:

• Alum – neutralizes odor throughout the day.
• Aloe vera – soothes, moisturizes, and calms the skin.
• Eucalyptus oil – provides a long-lasting feeling of freshness and purity.

The light texture absorbs quickly, leaving no residue on skin or clothes. Its subtle, eucalyptus-inspired fragrance is an instant energy boost for your morning routine.

SHIELD ME SOFTLY – Pure gentleness

Sensitive skin has its own needs - it’s easily irritated, sometimes dry, and requires extra care.

SHIELD ME SOFTLY was designed for these exact moments.

Key ingredients:

• Alum – neutralizes odor without blocking natural perspiration.
• D-panthenol – soothes and supports skin regeneration, even after shaving.
• Aloe vera – calms and deeply hydrates the skin.

This formula contains no essential oils, making it maximally gentle.

A delicate floral scent provides freshness and turns daily care into a soothing ritual.

It can even be applied right after shaving, when your skin needs the most tenderness.

Beyond underarms

Both SHIELD ME DAILY and SHIELD ME SOFTLY are more than classic deodorants.

Thanks to their gentle, mineral-based formula, they can also be used on other sensitive areas prone to sweat or friction:

• between thighs,
• under the bust,
• in the groin area,
• between skin folds.

This makes them ideal companions for hot weather, workouts, or long days away from home.

Summary

Sweating is a vital process that helps remove toxins and maintain electrolyte balance.

While fresh sweat is odorless, its contact with skin bacteria can produce an unpleasant smell. That's why skincare should focus on both supporting the skin externally and caring for its natural functions from within.

The right cosmetics, a balanced diet, and a healthy skin microbiome work together to keep your skin fresh, balanced, and healthy, every day.