HIRO Diapers are the world’s first truly naturally degradable, high-performing diapers — soft on skin, tough
on leaks, and powered by plastic-eating fungi to return to the Earth.
Frequently Asked Questions
Why is unbleached better?
Unbleached cotton retains its natural waxes and oils, which makes it naturally hydrophobic and ultra-soft against baby’s skin. It skips harsh processing and showcases the true texture of nature—safer for baby, gentler on the planet.
Why no blue line?
We intentionally removed the wetness indicator (aka the blue line) because it contains Bromothymol Blue, a chemical we choose not to include. It was invented to drive consumption, not because parents asked for it. HIRO Diapers are free from this and other unnecessary additives. Read more in The Truth about Diapers.
Way less plastic? Do they still perform?
Yes. HIRO Diapers use less plastic without sacrificing performance. In third-party lab tests, our diapers matched or outperformed leading natural brands in absorbency, dryness, and speed—keeping babies dry for up to 12 hours, day or night.
Are the friendly fungi in the diaper?
Nope! While foodgrade safe, the SuperHIRO fungi only come into play after diaper disposal. You drop a HIRO Pouch into the soiled diaper—never in direct contact with baby—and that’s when the fungi get to work breaking down waste.
How do they reduce the risk of rash?
HIRO Diapers are hypoallergenic, dermatologist-tested, and made with super soft, breathable materials that keep baby’s skin dry and comfortable. They’re free from harsh chemicals, chlorine, bromothymol blue wetness indicator, fragrances, lotions, and dyes—all common irritants that can lead to diaper rash.
Are they totally chlorine free?
Yes. HIRO Diapers go beyond the industry standard and are made with absolutely no chlorine bleaching. Our cotton and pulp are processed using totally chlorine-free (TCF) and oxygen-based methods.
Is the fungi safe for my baby?
Yes. The fungi used in HIRO Pouches are organic, culinary-grade, non-GMO, and never come into contact with your baby. The pouch stays sealed inside the diaper until it’s discarded, where it activates safely in landfill conditions—not in your nursery.
How can fungi actually break down plastic?
Fungi are nature’s most powerful decomposers. Our proprietary MycoDigestible™ technology uses a blend of shelf-stable fungi that activate when exposed to moisture. These fungi release enzymes that break down plastic at a molecular level, transforming it into environmentally safe matter—no microplastics, no greenwashing.
What are your wipes and diapers made of?
Wipes Ingredients
What our wipes are made of Our wipes are made from 100% plant-based fibers, using:
Unbleached cotton
Lyocell (derived from sustainably sourced wood pulp)
What’s in the formula
Each wipe is formulated to be gentle on sensitive skin and contains carefully selected ingredients:
Water
Aloe Barbadensis Leaf Juice
Glycerin
Tocopherol (Vitamin E)
Citric Acid
Sodium Benzoate
Potassium Sorbate
Sodium Cocoyl Glutamate
Disodium Cocoyl Glutamate
Phenoxyethanol
Diaper Ingredients
Absorbent core
Softwood fluff pulp from sustainably managed forests
Cleaned using a Kraft chlorine-free process
Sodium polyacrylate (SAP) for absorbency
Diaper layers & components
Backsheet: Natural cotton and polyester with recycled content
Topsheet: Polypropylene
Acquisition layer: High-loft nonwoven polyester
Fastening system: Polypropylene/polyethylene, film, and adhesive
Packaging
Made with up to 25% recycled polyethylene
Topsheet (The Layer That Touches Baby’s Skin)
Material
100% polypropylene
What it does
A soft, breathable nonwoven that stays dry to the touch
Why it matters
Chosen for its gentleness and low risk of irritation
Hypoallergenic
Dermatologist tested
No bleach, no lotions, no fragrances, no dyes
Looking ahead Today, we use polypropylene because it delivers excellent dryness and skin safety. We’re actively exploring plant-based, unbleached alternatives that maintain performance without relying on chemical softeners or bleach.
