Frequently Asked Questions

Hemp3D frames are made from hemp bioplastic — a composite of hemp fiber and a plant-based polymer — rather than petroleum plastic. Depending on the model, the frame is either injection-molded hemp bioplastic, 100% machine-pressed hemp, or hemp combined with PLA. The material is listed in the Details section of every product page.

Yes. Hemp fiber is strong and naturally resistant to mold, bacteria and UV light, which is why it holds up well in a frame. Every Hemp3D frame carries a limited one-year warranty against manufacturing defect, breakage and delamination.

No, and we won't claim otherwise. The frames are biobased — made from a plant feedstock instead of petroleum — but they are not compostable in a home or municipal facility. Any eyewear brand telling you its frames compost is describing something that does not happen in practice.

Yes. No animal-derived materials are used in any Hemp3D frame, lens or accessory.

Hemp3D designs and manufactures its own biobased products rather than sourcing finished frames from a third party. For sourcing detail on a specific model, contact us.

No. The hemp is processed into a rigid composite, so there is no scent.

It depends on the model and the lens color.

Zeus and Apollo are polarized in every lens color they come in, including Apollo's Arctic Blue.

On Demeter, Hera, Aphrodite and Hermes, the mirrored and solid lens colors are polarized with full UV400 protection, while Rose Tint, Pilot Yellow, Arctic Blue, Tawny Brown and Blue Light Blocking are color tints without polarization.

Each product page states which applies.

Yes. Every lens we sell carries full UV400 protection, which blocks ultraviolet light up to 400 nanometers — the complete UVA and UVB range. That applies to polarized and tinted lenses alike.

Polarized lenses cut glare reflected off flat surfaces — water, roads, snow, car hoods. They improve contrast and reduce eye strain in bright conditions. They are not the same thing as UV protection, which every lens has regardless.

Not currently. Hemp3D frames ship with fixed non-prescription lenses.

Horticultural fixtures are engineered for photosynthetic output, not for human comfort, and you work directly underneath them at close range. Eye strain, headaches and visual fatigue are consistently reported after long sessions. The long-term ocular effects of chronic exposure are not well studied, and any seller giving you a confident number is guessing. Treat eye protection in a grow room the way you would in a machine shop — standard equipment, not an accessory.

Yes, and the reason is measurable. Grow lights emit intense, spectrally narrow light that causes fatigue and distorts how plants look. EpicGrow and RazorGrow use Carl Zeiss lenses engineered for that specific light, cutting intensity while correcting color so plants read closer to how they would in daylight. Zeiss publishes the transmittance curves, which are on both product pages.

Your eye judges color by comparison. Under a source that emits heavily in one part of the spectrum and barely at all in another, everything shifts toward the dominant wavelengths and the differences you rely on collapse — nitrogen yellowing, magnesium bronzing and mite stipple all disappear into the same wash.

Under modern full-spectrum LED, color rendering is reasonable but raw intensity compresses contrast and washes out fine surface detail — which is how deficiencies and early pest damage get missed until they are obvious. A contrast-enhancing brown lens brings that detail back.

Blue. High pressure sodium floods a room with yellow and orange, and blue lenses reduce exactly that, restoring enough balance that green reads as green.

Brown. Under LED the problem is intensity and flattened contrast rather than a single color cast, and brown lenses increase contrast and sharpen definition.

Brown. It handles both HPS and LED without leaving you blind to either.

Because pests, nutrient deficiencies and disease are diagnosed visually. Under uncorrected grow light, yellowing, spotting and discoloration are extremely hard to read. Restoring accurate color makes those problems visible days earlier.

Ours carry a Flash ML infrared coating absorbing across 780 to 2000 nanometers — strong absorption of near infrared (IR-A, 780 to 1400 nm) and partial absorption of far infrared (IR-B, 1400 to 2000 nm). Partial means partial; we are not going to describe it otherwise.

Ask for the published transmittance curve. A real optical lens has a measured transmission-versus-wavelength chart. If nobody will show you one, nobody measured it.

Carl Zeiss, engineered specifically for grow room environments. The blue lens measures VLT 35.88% and the brown 30.79%, both filter category 2.

Both carry the same lenses; the difference is the frame. EpicGrow is a wraparound with full side coverage. RazorGrow is a contoured frame with corrugated arms and rubber ProGrip bands, which holds position better when you are leaning into a canopy. More detail in The Grow Light Lens Guide.

Yes, on US orders over $75. Below that, standard shipping rates apply at checkout.

Yes, with live carrier rates calculated at checkout. Free shipping does not apply to international orders, and any duties or import taxes are the customer's responsibility.

30 days from delivery, on unworn items in original condition. Return postage is paid by the buyer. Full details are on the returns page.

Frames carry a limited one-year warranty against manufacturing defect, breakage, delamination and hinge failure. A valid claim is resolved with a replacement pair, a repair, or store credit — your choice.

Lenses, scratches, loss, theft, cosmetic wear, heat damage and any repair attempted by a third party. The warranty is non-transferable and is resolved by replacement, repair or credit rather than a refund. Full terms are on the warranty page.

Email info@hemp3d.com with your order number and a photo of the failure. Photos usually resolve it in one exchange.

Rinse with cool water and dry with the supplied pouch or a microfiber cloth. Avoid household cleaners, alcohol and paper towel, all of which damage lens coatings. Never leave frames on a car dashboard — sustained heat warps any frame material, and heat damage is not covered by the warranty.

Yes. The minimum order is $250, and the limited one-year warranty extends to your customers with claims handled by us. See become a retailer.

Yes. Laser-engraved branding starts at 150 units at $19.00 each with a 50% deposit. A true custom frame color starts at around 50 frames. See custom and branded orders.