UFS Study on Sanitary Pads and Liners: What You Need to Know

The recent scientific study published in Science of the Total Environment (2026) by researchers from the University of the Free State (UFS) has confirmed what many women feared: several sanitary pads and liners sold in South Africa contain high levels of Endocrine Disrupting Chemicals (EDCs).

The study found phthalates, bisphenols, and parabens in nearly 100% of the liners tested. These chemicals are linked to cancer, hormonal imbalances, and reproductive health issues.

At GENTLE DAY®, we don’t just read these reports—we verify our safety against them. We want to provide you with a side-by-side comparison of what the UFS study found in common brands versus what our independent lab tests show for GENTLE DAY®.

Comparing the UFS Findings to GENTLE DAY® Standards

Chemical Group	What the UFS Found in Local Brands	GENTLE DAY® (AITEX Lab Result)
Phthalates	High detection (75-100%). Used to make plastics flexible.	NOT DETECTED. Below laboratory quantification limits (Report 2025OK3660).
Bisphenols (BPA/BPS)	Frequently detected in pads. Linked to hormonal disruption.	NOT DETECTED. Results are below laboratory detection limits.
Parabens	Present in many liners as preservatives.	NOT DETECTED. GENTLE DAY® uses no harmful chemical preservatives.
Heavy Metals	Traces of Lead, Cadmium, and Chromium in "period packs."	NOT DETECTED. All 10 tested metals are below detection limits.
Biocompatibility	Concern over long-term dermal absorption of toxins.	CERTIFIED SAFE. "Made for Health" certification ensures no skin irritation or toxicity.

Why GENTLE DAY® is Different

The researchers at UFS noted that long-term, repeated dermal contact with these chemicals is a serious health concern. Because you wear these products for hours, every single month, for decades—purity and biological safety are non-negotiable.

1. "Made for Health" – The Gold Standard for Medical Safety

While many brands stop at basic safety, GENTLE DAY® holds the prestigious Made for Health® certification. Evaluated by AITEX, this is not just a chemical test, but a biological evaluation for healthcare products. It guarantees:

●       No Cytotoxicity: The materials do not damage or kill human cells.

●       No Skin Irritation: Rigorous testing ensures the product is safe for even the most hypersensitive skin.

●       Biocompatibility: Every layer is verified to be safe for prolonged contact with the body, directly addressing the "dermal contact" risks highlighted by the UFS researchers.

2. OEKO-TEX® Standard 100 (Product Class II)

Our latest AITEX (Spain) report confirms that every part of a GENTLE DAY® pad meets the strict requirements for products in direct contact with skin. This voluntary annual audit ensures that no harmful substances—even those not yet regulated by local laws—are present in our products.

3. GOTS Certified Organic

Our tampons are 100% organic cotton. This certification ensures that no pesticides were used in the fields and no toxic chemicals were used during manufacturing.

4. The Anion Strip: Natural Hygiene

Instead of using artificial fragrances (which the UFS study warns can contain VOCs), GENTLE DAY® uses a patented yellow Anion strip. It naturally inhibits bacterial growth and neutralizes odors, protecting your intimate health without chemicals.

A Note to Our Partners and Pharmacists

We provide these laboratory reports because transparency is the foundation of healthcare. When you stock GENTLE DAY®, you are offering your customers a product that is not just "natural," but certified for health. It is the only choice for those who want to avoid the EDC risks identified in the latest South African research.

You Deserve Better

The UFS study is a wake-up call for the industry, but it doesn't have to be a source of fear for you. You have a choice. You can choose a brand that prioritizes your endocrine health and biological safety over profit margins.

Your health is our foundation. Period.

Review our full laboratory reports, "Made for Health" details, and certifications here: gentleday.com/pages/certified-and-awarded.