UV Damage Happens — Even Indoors
UVA accounts for about 95% of the UV radiation that reaches the Earth’s surface.
It easily passes through ordinary window glass, reaching your skin, eyes, and interior surfaces every day. Over time, this can lead to:
- Skin aging (spots, wrinkles, and sagging)
- Increased risk of skin cancer
- Eye conditions such as cataracts
- Fading of flooring, furniture, and artwork
Most people are exposed to invisible UVA indoors without realizing it, significantly increasing these risks.
Beauty
- About 80% of visible skin aging is considered to be caused by photoaging.
- Wrinkles, Sagging/dark spots, Moles
- Discoloration of the sclera (pigmentation, redness, yellowing)
- Photoaging due to excess oxidative stress
- Acne worsening
- Skin dryness and aggravation of atopic dermatitis (eczema)
- Enlargement of pores and hyperpigmentation
Health
including cataracts, glaucoma, age-related macular degeneration, pterygium, conjunctival degeneration, and conjunctival cancer.
including actinic keratosis (precancerous), basal cell carcinoma, squamous cell carcinoma, and melanoma.
UVA-induced oxidative stress may lower immune function; some studies suggest that even 5–20 minutes of midday sun exposure can begin to suppress immunity.
- Dry eye and hazy / blurred vision
Vision loss from conditions such as cataracts reduces sensory stimulation,
which has been suggested to increase the risk of cognitive impairment.
Recent studies have begun exploring whether UVA-induced oxidative stress may be associated with an increased risk of serious conditions such as cancer, stroke, and myocardial infarction.
Degradation of materials
- Vehicle interiors
- Flooring, wallpaper, ceilings, and staircases
- Furniture (sofas, curtains, desks, shelves, and more)
- Electronic appliances (microwaves, refrigerators, televisions, etc.)
- Photographs and paintings
- Collections such as specimens, figures, and merchandise
Recommended for People Like This
UVA that enters through car windows and indoor glass can go unnoticed while significantly contributing to cataracts, skin cancer, wrinkles, dark spots, and other forms of photoaging.
Beauty
- People who are conscious about beauty
- People who want to prevent wrinkles and sagging
- People who want to prevent dark spots and moles
UV exposure during childhood and adolescence does not show its effects immediately, but it has a major impact on future health risks and visible aging.
Health
Babies and children are extremely vulnerable to UV-induced damage,
because they have a weaker ability than adults to repair DNA damage caused by ultraviolet radiation, and their melanin production and eye lenses are still immature.
UV exposure during childhood and adolescence does not show its effects immediately, but it has a major impact on future health risks and visible aging.
Dogs and cats often stay close to the ground, making them more likely to receive direct sunlight and reflections from the floor into their eyes.
Dogs are particularly prone to developing cataracts, while cats are more susceptible to skin cancer.
Because pets cannot express discomfort on their own and eye and skin problems are not always noticeable, cataracts and skin cancers can progress without their owners realizing it.
Most side windows of cars still allow UVA to pass through, exposing occupants during everyday travel.
From a statistical and scientific standpoint, individuals with lower melanin levels — those with lighter skin — are particularly susceptible to UVA-related damage.
Even brief exposure—about 5 to 15 minutes—of midday UVA can significantly suppress immune function, making colds and other infections more likely.
Most older individuals already have age-related eye conditions such as cataracts or glaucoma.
Many have also accumulated significant UV-related skin damage over the years.
Degradation of materials
- People who want to protect the interior of their home or car
- People who have rooms with large windows or strong west-facing sunlight
- People who want to protect collections or family keepsakes from fading and deterioration
About UVA
UV rays are invisible and easy to overlook, yet they can affect our health and daily environment in many ways without us realizing it.
The UV radiation that reaches the Earth’s surface consists of two types: UVA and UVB.
- UVA passes through glass and enters indoor spaces and vehicles.
- UVB is mostly blocked by glass and does not significantly enter indoor spaces or vehicles.
UVA vs UVB
| UVA | UVB | |
|---|---|---|
| Glass | UVA passes through glass, so it enters rooms and cars. | UVB does not pass through glass. |
| Health | Causes DNA damage and offers no health benefits. | Contributes to sunburn and helps produce vitamin D. |
| Skin & Eye | Penetrates deeper layers of the skin and eyes. | Affects mainly the surface layers. |
| Ratio | About 95% of UV radiation. | About 5% of UV radiation. |
| Weather | Remains strong even on cloudy days. | Greatly reduced on cloudy or rainy days. |
UVA | UVB | |
|---|---|---|
Glass | UVA passes through glass, so it enters rooms and cars. | UVB does not pass through glass, so it does not enter rooms or cars. |
Health | UVA causes DNA damage and offers no health benefits. | UVB contributes to sunburn and helps produce vitamin D. |
Skin & Eye | UVA penetrates into the deeper layers of the skin and eyes. | UVB reaches only the surface layers of the skin and eyes. |
Ratio | UVA accounts for a large portion of sunlight (about 95%) and causes most of the long-term damage. | UVB accounts for a small portion of sunlight (about 5%) and causes less overall damage. |
Weather | UVA remains abundant even on cloudy or rainy days. | UVB is greatly reduced on cloudy or rainy days. |
Even with UV-blocking films, indoor plants can still photosynthesize normally.
Nano-Ceramic Technology
- One of the most advanced and high-performance technologies used in modern UV-cut window films.
- It utilizes extremely fine metal-oxide ceramic nanoparticles—approximately 5 to 30 nm in size, about 100 times smaller than the wavelength of UV light—uniformly dispersed throughout the film.
- Its origins trace back to aerospace research conducted by NASA and the U.S. Department of Defense (DoD) in the 1970s and 1980s.
Application of Nano-Ceramic Technology in Military and Aerospace Fields
Beginning in the 2000s, nano-ceramic technology was formally adopted as a coating to withstand the extreme environments faced by aircraft and military equipment.
Today, this cutting-edge technology has expanded beyond specialized industries and is now being applied to everyday environments such as residential and office windows, as well as automotive glass.
Fields in which nano-ceramic technology is used include:
- Exterior coatings of airplanes and fighter jets
- Fighter jet canopies
- Infrared seeker domes on missile tips
- Observation windows of spacecraft and satellites
- Exterior coatings of spacecraft and satellites
- Protective windows in semiconductor manufacturing equipment
- Medical and research facilities (to prevent light-induced degradation of precision instruments and specimens)
Application of Nano-Ceramic Technology in Museums
More than 80% of visible aging is caused
by UV exposure.
- Allows 90% of visible light to pass through
- Maintains nearly unchanged transparency
- Ideal for those who prefer a clear, unobstructed outdoor view
Compared to products of similar quality (nano-ceramic technology, 99% UV protection, and over 12 years of durability), this film is offered at 30%–55% lower prices.
- Allows 70% of visible light to pass through
- Recommended for those who prefer a clear, unobstructed view outside
- Ideal for rooms or cars where you prefer not to be seen from the outside
Compared to products of similar quality (nano-ceramic technology, 99% UV protection, and over 12 years of durability), this film is offered at 30%–55% lower prices.
NC90 Premium / NC70 Premium vs Standard UV-Blocking Films and Curtains
| NC90 Premium / NC70 Premium | Standard UV-Blocking Films & Curtains | |
|---|---|---|
| UVA Blocking | Blocks 99% of UVA with long-lasting performance. | Most products do not maintain 99% UVA protection over time. |
| Material | High-quality nano-ceramic film with stable performance. | Mainly dyed films with varying quality. |
| Durability | Over 12 years. | Several months to 2–3 years. |
| Structure | Advanced 5-layer structure for durability and stability. | Single-layer or basic multi-layer construction. |
| Price | Under $25.99/m² 30–55% lower than comparable products | Typically lower-priced. |
NC90 Premium / NC70 Premium | Standard UV-Blocking Films and Curtains | |
|---|---|---|
UVA Blocking | Blocks 99% of UVA with long-lasting performance | Most products do not achieve 99% UVA protection, and even when they do, performance declines significantly over time |
Material | High-quality nano-ceramic film ensures stable and consistent performance | Most are dyed films, and even nano-ceramic options may vary in quality |
Durability | Over 12 years | A few months to 2–3 years |
Structure | Advanced 5-layer structure for superior durability and stability | Single-layer or basic multi-layer construction |
Price | Under $25.99 per m² 30–55% lower than comparable products (High-quality nano-ceramic films, 99% UV protection, 12+ years durability) | Typically lower-priced |
1. Protective hard layer
Protects the surface from scratches and keeps the film exceptionally clear for many years.
2. Nano-tech polymer layer
Prevents warping, degradation, and yellowing of the film.
3. Nano-particle tint layer
The core UV-blocking layer.
High-quality nano-ceramic particles block 99% of UVA while keeping indoor brightness almost unchanged.
4. Nano-tech polymer layer
Provides further enhancement of heat resistance and structural stability, helping maintain optical performance over the long term.
5. Ultra-transparent adhesive layer
Adheres seamlessly to glass, preventing bubbles and cloudiness while preserving clear visibility.
How We Deliver Premium Quality at a Competitive Price
They are offered at one of the lowest prices among comparable high-quality products, without compromising quality.
The reasons are as follows.
Mass Production
Costs are reduced by limiting the lineup to two types (NC90 Premium / NC70 Premium).
Further cost savings are achieved by offering only three standardized lengths (1m × 1m, 1m × 2m, 1m × 3m).
Minimizing Intermediaries
By minimizing intermediaries and shipping directly, we reduce various costs associated with retail distribution, including labor, multiple stages of transportation, intermediary fees, utilities, and rental expenses.
Profit Margin Minimization
Because our mission is to deliver better health to as many people as possible, we intentionally keep our profit margin very small, maintaining only the minimum level necessary for sustainable operations.
Simple Packaging Design
By using plain, unbranded white packaging, we minimize printing costs and reduce expenses for boxes and tubes that do not affect product performance.
Efficient Inventory and Order Management
We manufacture, cut, pack, and ship each product after receiving an order, minimizing the risk of excess inventory.
This approach also keeps storage costs, packing expenses, and other related fees to an absolute minimum.
Additional Benefits
Heat Reduction
Infrared light is also reduced — by 50% with NC90 and 99% with NC70.
This helps keep both indoor rooms and car interiors from becoming excessively hot, making them significantly more comfortable.
Protection
・The film makes the glass more resistant to breaking during events such as hurricanes, break-ins, or accidents.
・Even if the glass does break, it helps prevent shards from scattering, improving overall safety.
Clarity of View
The film reduces glare and reflections, allowing you to enjoy a clearer and more beautiful view.
This technology is also used in museums and art galleries to reduce reflections and ensure clear visibility.
Easy to Use
No professional installation required.
Easy to apply and remove, even for DIY users.
Detailed instructions on how to apply the film can be found on the “Learn More” page.
Energy Saving
Infrared light is also reduced — by 50% with NC90 Premium and 99% with NC70 Premium.
In summer, this improves air-conditioning efficiency, reduces the amount of time the AC needs to run, saves on electricity costs, and helps lower CO₂ emissions.
Privacy
With NC70 Premium, you can see outside during the daytime, while it becomes difficult for people outside to see in.
This allows you to maintain brightness without closing the curtains, while still protecting your privacy — and blocking 99% of UV at the same time.
Pets & Plants
In addition to protecting pets as mentioned earlier, the film also helps prevent leaf burn and other sun-related damage in houseplants.
*Plants can still perform photosynthesis, as visible light continues to pass through the film.
Driving Safety
Helps prevent glare and reflections inside the car, supporting safer driving.
Reduces glare from oncoming headlights and other reflected light at night, helping prevent eye strain.
Environmentally Friendly
Due to the nature of the product, it is currently very difficult to use only fully eco-friendly materials. However, the manufacturing process is designed to minimize environmental impact, resulting in a product that is developed with strong environmental consideration.