HEAL SMART YARNS™ refers to a textile technology platform developed to explore infrared-responsive yarns for non-medical apparel and wellness applications.

Founded by Science of Apparel’s Roberto Crivello, HEAL SMART YARNS™ is a platform of advanced infrared yarn technologies designed to support comfort-focused apparel applications. Certain material components may reflect infrared energy emitted by the body, contributing to thermal balance and wearer comfort.

The platform supports a range of infrared yarn solutions, each engineered to meet specific performance, comfort, and wellness goals across activewear, bedding, therapeutic garments, and everyday apparel.

Infrared yarns work by capturing body heat and converting it into infrared energy, particularly Far Infrared Radiation (FIR), which is then re-emitted back into the body. This process is passive, safe, and continuous, making it highly suitable for integration into wearable textiles.

Mechanism of Action

Body Emits Heat (Infrared Radiation)

The human body constantly radiates heat, much of it in the infrared spectrum. Infrared yarns are designed to interact with this natural process.

Infrared-Responsive Materials Embedded in the Yarn

The yarns are infused or constructed with infrared-emitting agents such as:

Bioceramics

Mineral oxides

Specialty polymers

These materials can absorb heat energy from the body and re-radiate it as FIR.

Re-Emission of FIR into the Skin and Tissue

The yarns emit Far Infrared Radiation (wavelengths typically 4–20 μm) into the surrounding wear environment.

Infrared-responsive materials are designed to interact with naturally emitted body heat. In apparel applications, this interaction may contribute to perceived warmth, comfort, and wear experience. No medical or therapeutic claims are made or implied.

Currently, HEAL SMART YARNS™ technology may be incorporated into custom knit and woven yarns, fabrics, or finished products through industry manufacturing partners.

HEAL SMART YARNS™ is dedicated to responsible innovation.

Materials used in HEAL SMART YARNS™ technology are selected for eco-conscious performance. The platform avoids harmful chemical treatments and emphasizes durable, embedded functionality.

HEAL SMART YARNS™ is used in a variety of products, including:

Athletic and casualwear (shirts, leggings, socks).

Recovery wear and compression garments.

Sleepwear and bedding.

Support gloves, sleeves, wraps, and band-aids.

Our technology is versatile and can be applied to many wellness-enhancing textiles for WELLNESS ENTHUSIASTS, ATHLETES, BEDDING INDUSTRY, MILITARY, MEDICAL SPECIALISTS, VETERINARIANS.

HEAL SMART YARNS™ technology is explored for its material properties, durability, comfort, and infrared-responsive behavior in textile applications.

The following descriptions relate to general infrared science and published research in non-textile contexts. HEAL SMART YARNS™ products do not claim these effects and are not intended for medical use.

Near Infrared Rays

-  Short in length

-  Surface level

-  Closest to visible light

-  About 0.7 - 1.1 microns

-  No warmth

-  Used in remote control devices

-  Improve skin health

Mid Infrared Rays

-  Average in length

-  Targets deeper layers

-  Used for thermal imaging

-  About 3 - 5 microns

-  Aiding muscle recovery

Far Infrared Rays

-  Long in length

-  Penetrates even deeper

-  Closest to microwaves

-  About 7 - 14 microns

-  Emits thermal energy

-  Used in saunas and fabrics

-  Easily absorbed by the body

- Provides overall therapeutic effects such as pain relief and detoxification

Far Infrared Rays (FIR) are the most beneficial for health and wellness because the human body readily absorbs their wavelength (7-14 microns). FIR energy can penetrate the skin and tissues to improve circulation, boost oxygenation, and promote recovery.

Products incorporating HEAL SMART YARNS™ technology are designed for durability and comfort during physical activity. Material behavior may contribute to perceived warmth balance and wear comfort during use. Individual experiences may vary.

No. Products incorporating HEAL SMART YARNS™ technology are not intended to diagnose, treat, cure, or prevent any disease or medical condition.

Products incorporating HEAL SMART YARNS™ technology are designed for comfort and thermal balance in apparel textile applications. Individual experiences may vary.

Results vary by individual and the level of consistency with which the product is used. Individual experiences may vary depending on usage and product type. No specific outcomes or timeframes are guaranteed.

No. HEAL SMART YARNS™ technologies are noninvasive and safe.

As a platform of advanced infrared yarns, HEAL SMART YARNS integrates multiple FIR-based textile technologies designed to support the body’s natural healing processes without introducing risk. Infrared textile products, including those utilizing Far Infrared (FIR), are classified by the FDA as nonsignificant risk and do not require warning labels—even for infants, nursing mothers, or expectant mothers.

There are no known side effects associated with using these yarns. Some users may experience a gentle warming sensation, which is a normal response to improved circulation and a sign that the infrared technology is active. As with any wellness product, we recommend consulting a healthcare professional if you have specific medical conditions or concerns.

No. The particles are permanently embedded in the fibers of HEAL SMART YARNS™, ensuring that the far-infrared benefits remain effective throughout the product's life, even after frequent washing and long-term use.

Far Infrared energy emitted from clay silicates and minerals was accidentally discovered in 1970 at an ancient ceramic factory in China. Medical tests of some workers showed significantly better levels of health than expected, even though they were working in what was considered mucky and "poor" conditions.

Tests of the muddy clays around the factory revealed high levels of the 33 essential minerals the human body needs. Specific combinations of these minerals were shown to emit far-infrared energy waves, which led to further exploration of their health and wellness applications.

Yes. HEAL SMART YARNS™ products should be worn directly with your skin for optimal results. The closer the fibers are to your body, the more effective the FIR energy emission will be.

Yes! HEAL SMART YARNS™ technology is powered by your body’s natural heat, so it works as effectively in the dark.

Currently, our products are not universally covered by insurance. However, some customers have successfully submitted claims for reimbursement. Check with your insurance provider for more details.

Multiple peer-reviewed studies and positive user testimonials have validated the effectiveness and safety of HEAL SMART YARNS. Users reported significant improvements in conditions such as neuropathy, plantar fasciitis, and recovery from surgeries without mentioning any adverse side effects. 

Numerous published studies showcase the significant benefits of FIR light therapy, also known as photobiomodulation, on cellular health and function. This body of research supports the practical advantages provided by HEAL SMART YARNS™.

Discover the science behind it yourself!

HEAL SMART YARNS™ was originally developed by Science of Apparel ™ (SOA.USA) as a textile technology platform during its early development.