Why Organic Cotton?

Why Organic Cotton?

The science, studies, and the evidence behind choosing natural fibres for your activewear.

Activewear sits directly against your skin, your body’s largest organ for hours at a time.

The materials, chemicals, and fibre structures used in your clothing directly affect your skin health, hormones, respiratory system, and long-term wellbeing.

Organic cotton is one of the safest, cleanest, and most studied natural fibres available.
Here’s what the research shows.

1. Reduced Chemical Exposure

Organic cotton means less toxins against your skin

GOTS Certified Organic Cotton is grown and processed without

  • formaldehyde

  • chlorine bleach

  • azo dyes

  • heavy metals

  • endocrine disrupting chemicals

  • synthetic pesticides

  • A Harvard School of Public Health report outlines how repeated exposure to endocrine-disrupting chemicals (EDCs) through skin contact may affect fertility, metabolism, and hormone balance.

  • A 2022 PubMed review found that textiles processed with formaldehyde and azo dyes can cause direct skin irritation, allergic dermatitis, and chemical absorption through sweat.

  • NIH research confirms that conventional cotton often contains pesticide residues that can remain through the manufacturing process.

Translation: Organic cotton reduces the chemical load your skin absorbs every day.

2. No Microplastic Shedding

Synthetic activewear releases microplastics every time you move, sweat, or wash

Polyester and nylon are plastic fibres.

Every wear and wash releases microscopic plastic particles into your environment and your body.

  • A Harvard environmental health study found that microplastics are now detected in human blood, lungs, and even placental tissue.

  • NIH research (2021) shows synthetic fabrics shed millions of microplastic fibres per wash.

  • A 2020 PubMed study detected microplastics in 87% of tested human lung samples.

Organic cotton is a natural cellulose fibre, so it:

✔ does NOT shed microplastics
✔ biodegrades
✔ lowers your daily exposure to plastic particles

This matters for skin health, lung health, immune health, and long-term wellbeing.

3. Superior Breathability & Thermoregulation

Organic cotton fibres contain natural hollow cores and hydrophilic (water attracting) properties.

This creates:

  • better airflow

  • natural moisture absorption

  • less sweat build up

  • reduced bacterial growth

  • more stable skin microbiome

  • A PubMed study on textile thermoregulation (2018) showed natural fibres provide superior moisture management and cooling compared to synthetics.

  • NIH findings confirm cotton reduces bacterial overgrowth and odour more effectively than polyester.

4. Better for Sensitive Skin & Dermatological Health

Cotton supports the skin barrier, synthetics can disrupt it

Synthetic activewear traps sweat, heat, and bacteria. This can disrupt the acid mantle (your skin’s protective layer), increase friction, and lead to rashes and folliculitis.

Organic cotton reduces:

  • irritation

  • dermatitis

  • friction

  • overheating

  • sweat rash

If you experience eczema or other skin irritations, synthetic materials tend to aggrevate it, whereas organic cotton is gentler on your skin. 

  • A PubMed clinical study (2020) showed cotton apparel improved skin comfort and reduced eczema flare-ups versus synthetic textiles.

  • Harvard dermatology research highlights cotton as the recommended fabric for sensitive or reactive skin.

5. Hormone Friendly (especially for women)

Chemical residues and microplastics create potential hormonal disruption

Women are especially vulnerable to hormone disrupting chemicals found in certain synthetic dyes, finishes, and microplastics

  • Harvard T.H. Chan School of Public Health reports that many plastics contain EDCs linked to menstrual changes, fertility impacts, and metabolic disorders.

  • A 2021 Environmental Health Perspectives article found that microplastics can interfere with estrogen receptors.

Organic cotton avoids these pathways entirely.

6. Strength, Durability, and Performance (Naturally)

The right cotton blend performs

Most ODAAT Activewear is made with 90% organic cotton + 10% spandex, a blend backed by textile science.

This ratio provides:

  • high tensile strength

  • excellent stretch and recovery

  • long-term durability

  • comfort without a plastic feel

  • A PubMed textile engineering study (2019) demonstrated that cotton-spandex blends maintain shape and strength exceptionally well over time.

7. Sustainable for the Planet

Organic cotton farming reduces:

  • water consumption

  • soil degradation

  • carbon emissions

  • chemical runoff

  • A Harvard sustainability review found organic cotton uses significantly less environmental toxicity than conventional cotton.

  • NIH studies show reduced ecological impact and safer conditions for farm workers.

Cleaner for the planet, cleaner for you, cleaner for our future.


Organic cotton isn’t just “natural.” It’s scientifically supported, health-protective, and performance-driven, a far safer alternative to plastic-based activewear.

This is why ODAAT chooses organic cotton:

To protect your skin.
To support your hormones.
To reduce your chemical and microplastic load.
To give you activewear your body can trust.