(And Why It Matters More for Black Women) · House of DZA Blog · ~1,400 words · 10 min read
She puts her sunglasses away in September.
They go into the drawer with the sunscreen, the summer bag and the sandals — seasonal items, she thinks, no longer needed until next year.
This is one of the most common, and most costly, mistakes in eye care.
UV radiation does not stop in autumn. In fact, at certain times of year, the lower angle of the sun means UV light travels a longer path through the atmosphere — intensifying its impact on unprotected eyes.
This guide explains what UV400 protection actually means, why eye protection matters year-round, why melanin does not protect Black women's eyes the way many assume, and how to choose sunglasses that genuinely protect while looking exceptional.
What UV400 Actually Means
UV400 means a lens blocks 99–100% of ultraviolet radiation up to 400 nanometres — covering both UV-A and UV-B wavelengths.
Without this protection, repeated UV exposure can contribute to:
→ Cataracts — clouding of the lens, and the leading cause of blindness globally
→ Macular degeneration — damage to central vision
→ Photokeratitis — sunburn of the cornea, painful and damaging
→ Pterygium — tissue growth on the white of the eye
Fashion sunglasses — including many designer styles — do not always include UV400 protection. Dark lenses without UV coating can actually increase eye damage: the tint causes the pupil to dilate, letting in more light, while providing no UV filtration.
DZA sunglasses are UV400 certified. Every frame. Every collection.
SHOP UV400 CERTIFIED FRAMES
The Autumn UV Risk — Why September to November Matters
UV exposure is highest when the sun is directly overhead — but that does not mean lower sun angles are safe.
In autumn and winter, the lower angle of the sun means UV rays strike closer to eye level rather than from above. This can increase direct UV exposure to the eyes, particularly:
→ During early mornings and late afternoons, when the sun sits close to the horizon
→ When driving — windscreens block some UV, but not always at the angle of autumn morning or evening sun
→ Outdoors between 10am and 3pm, even on overcast days, since UV penetrates cloud cover
The UV Index — the measure of solar UV radiation strength — drops in autumn, but it never reaches zero. And cumulative UV damage builds over years, not days.
Wearing UV400 certified frames year-round is not an accessory choice. It is an investment in long-term eye health.
The Melanin Misconception
A common belief among Black women is that higher melanin content protects against UV damage.
This is partially true for skin — but it is not true for eyes.
The eyes of all humans have approximately the same level of melanin regardless of skin tone. This means Black women are equally vulnerable to UV eye damage as those with lighter skin.
In fact, research suggests certain eye conditions — including uveal melanoma, a rare but serious eye cancer — can be underdiagnosed in Black patients, partly due to assumptions about UV protection from melanin.
This matters for sunglasses purchasing behaviour: if you have believed that your skin tone reduces your UV risk, it is worth reconsidering your relationship with year-round eye protection.
UV400 certified sunglasses are not optional for women with darker skin — they are as essential as they are for anyone.
How to Check Your Current Sunglasses
1. Look for the UV400 label
Genuine UV400 lenses are labelled — check the frame, the lens, the case or the product description. If there is no label, it is not certified.
2. Check online product information
Reputable brands state UV protection clearly in their product descriptions. If it is not mentioned, it is probably not there.
3. Lens darkness is not a UV indicator
Dark lenses without UV coating provide no protection — and, as above, can increase exposure by dilating the pupil. Always check the UV rating, not just the tint.
DZA sunglasses include the UV400 rating in every product description. If you are shopping elsewhere, make this your first filter.
Finding Your Perfect Autumn Frame — A Face Shape Guide for Black Women
Standard face shape guides were not written with us in mind. High cheekbones, wider nose bridges and broader facial structures are often left out of the generic “oval face = any frame” advice — and the result is that many of us wear frames that do not fit, do not flatter, or physically slide down the face.
House of DZA's frame selection considers this. Here is the fuller guide:
Round face
Angular or geometric frames (square or rectangular DZA silhouettes) add definition and visual length that a round face otherwise lacks.
Heart face
Frames wider at the top than the bottom — cat-eye or browline DZA styles — balance a narrower chin and soften the width of the forehead.
Square face
Rounded or oval DZA silhouettes soften strong jaw and brow lines, bringing curve to counter the face's natural angles.
Oval face
The most versatile shape — almost every DZA frame works. Autumn is the season to go bold with an oversized statement style.
Diamond face
Frames with detailing along the brow line, or oval shapes, complement high cheekbones without adding extra width at the temple.
The most important rule: wear what makes you feel like yourself. Confidence always looks right.
Conclusion
Eye health is not a summer conversation.
For Black women especially — who navigate a beauty and wellness industry that was rarely designed with them in mind — understanding what genuinely protects us matters.
UV400 certified sunglasses are one of the simplest, most stylish, most meaningful investments you can make in your long-term health.
House of DZA frames are UV400 certified, designed with diverse nose bridges and face shapes in mind, and available year-round — because your eyes need protection in every season.
SHOP UV400 CERTIFIED DZA SUNGLASSES