UPF vs SPF: Sun Safety Made Simple

UPF vs SPF can be confusing when purchasing sun protection. UPF is for Apparel and SPF is for Sunscreen.  This article offers succinct explanations to enable you to swiftly understand these distinctions and make educated choices for sun protection for yourself and your family. Links throughout this page can take you to more in depth information.

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UPF (stands for Ultraviolet Protection Factor)

UPF is a rating system for clothing worn to prevent exposure to harmful UV rays. It is a measure of how much UVA and UVB solar rays pass through the fabric to the skin.

UPF 50 allows only 1/50th of the sun’s radiation to reach the skin.

UPF 40-50+: Excellent protection

UPF 25-39: Good protection

UPF fabric undergoes rigorous testing by an independent laboratory using a standardized testing method to determine its effectiveness in blocking harmful UV radiation. This testing process evaluates various factors that can significantly influence the final UPF rating of the fabric. Key elements such as the weave of the fabric, its color, weight, and how much the fabric stretches are all carefully assessed.

Additionally, the condition of the fabric—whether it is wet or dry—plays a crucial role in the UPF rating. Typically, fabrics with tighter weaves, darker colors, and greater density are more effective at blocking UV rays, resulting in a higher UPF rating.

Performance Polyester possesses intrinsic molecular structures, such as aromatic rings, that enhance its ability to absorb ultraviolet (UV) radiation. This makes it a naturally effective material for UV protection in textiles.

Fluorescent dyes can indeed enhance the UV-blocking ability of knitted performance polyester fabrics. Read more about our Hi Vis apparel.

Moreover, the fit of the garment can also impact the UPF rating; a looser fit tends to provide better protection because it reduces the amount of skin exposed to direct sunlight. This comprehensive testing ensures that UPF-rated fabrics meet the necessary standards to offer reliable sun protection.

Read more about Sun Protective Clothing on SkinCancer.org. See what UPF 50 Performance Polyester styles we can customize for you.

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SPF (Sun Protection Factor)

The SPF number in sunscreen lotion measures how long exposed skin takes to burn after applying. 30 SPF allows you to be in the sun 30 times longer than if you did not apply sunscreen.

An SPF rating of 30 or higher broad-spectrum sunscreen is recommended by the American Cancer Society. However, it must be reapplied every 2 hours.

UVA and UVB are two types of ultraviolet radiation from the sun. UVA penetrates deep into the skin, causing premature aging and wrinkles. UVB primarily affects the skin’s surface, leading to sunburn. Both can damage DNA and increase the risk of skin cancer, making sun protection essential.

Broad Spectrum Sun Screen provides protection against UVA and UVB rays, be careful that your sunscreen has protection from both. See more recommendations about how to choose sunscreen from the American Cancer Society’ UV protection page.

Choose Sunscreen to Match Your Skin Type

Maintaining moisture is essential for dry skin, especially with sunscreen. Dryness can lead to more visible fine lines due to a weakened skin barrier, making it vulnerable to UV damage. You can use a moisturizing sunscreen with ingredients like shea butter or glycerin, and hyaluronic acid. These help to retain water, but should be paired with a moisture-sealing agent.

For oily or acne-prone skin, opt for an oil-free or mattifying sunscreen, as niacinamide can combat acne and ceramides enhance anti-aging.

Sensitive skin benefits from mineral sunscreens with zinc oxide or titanium dioxide, avoiding fragrances to prevent irritation.

Ultimately, finding a sunscreen that suits your skin type and that you enjoy using will encourage consistent daily application.

It’s essential to apply broad sunscreen liberally. Reapply it every two hours, or more frequently if you’re swimming or sweating, to maintain adequate protection. Additionally, wearing sun-protective clothing, seeking shade, and avoiding peak sun hours can further reduce the risk of sun damage.

When it comes to the sun, let the shirt do the work.

“Clothing is the single most effective form of sun protection for the body” says the Skin Cancer Foundation on its Back to School Blog post for parents. Long sleeve sun protection loose fitting shirts with UPF 50 will protect you all day long. Combine with UPF 50 Sun Mask, UPF 50 sun gloves, a wide brimmed hat, UV sunglasses.

Don’t forget broad spectrum SPF 30+ sunscreen on exposed areas of skin.

Boy building a sand castle while wearing a UPF sun protection shirt.

Understanding the difference between SPF vs UPF can help you better protect your skin from harmful UV rays. Incorporate both into your sun protection routine to ensure you cover yourself from head to toe.

Breathability is the Key to Comfort

Hot and humid conditions will require breathable fabrics that wick moisture away from the skin, helping to prevent skin irritation. All of our UPF styles employ moisture management to keep you comfortable. Dye sublimation ensures the fabric stays breathable after it is decorated.

See many Companion Styles for your Entire Crew of Companions

With proper sun protection clothing from CustomUPF.com, fishing, boating and water sports can be a rewarding lifetime pursuit. Outdoor workers can also minimize the risk of too much exposure by wearing sun protection apparel and broad spectrum sunscreen.