Ingredients Review: NEW The Ordinary UV Filters SPF 45 Serum

About The Ordinary UV Filters SPF 45 Serum

WHERE TO BUY: 

$19.00/100ml; The Ordinary

$19.00/100ml; ULTA

SPF. The only filter your face needs. UV Filters SPF 45 Serum is a serum-textured sunscreen to provide broad-spectrum SPF 45 sun protection against UVA and UVB rays. This daily use sunscreen protects against sun damage and reduces premature skin aging caused by the sun. This daily suncare formulation is lightweight and white cast-free.

Compatible with makeup and skin products for easy layering, UV Filters SPF 45 Serum offers instant and all-day hydration support. This formulation is non-comedogenic, suitable for all skin types, and leaves skin with a natural-looking luminous finish.

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Key Ingredients & Benefits

Active Ingredients: 

Avobenzone 3.0% (UV Filter)
Homosalate 7.0% (UV Filter)
Octisalate 4.5% (UV Filter)
Octocrylene 10.0% (UV Filter)

UV Filters SPF 45 Serum is formulated with a hydrating ceramide blend to strengthen skin’s barrier, and help keep hydration locked in. The brand really wanted it to feel comfortable on your skin, so they focused on including specific hydrating ingredients and UV filters for comfort, without leaving a white cast.

- Protect. Hydrate. Repeat.

Ceramides represent the majority (50%) of molecules found naturally in the skin's lipid barrier. These fatty molecules organize themselves into multiple layers across the skin, which keep water locked in between them.

The ceramide blend in the formulation is a mix of phospholipids and sphingolipids, which both provide support to the skin barrier.

- All About the Filters

When it comes to getting rid of the white cast that often comes with suncare—it’s all about the filters. While both chemical and mineral filters can be used in a formulation to provide UV protection, it is harder to formulate a truly transparent sunscreen with mineral filters alone. By working with a blend of FDA-approved chemical filters, The Ordinary was able to formulate a lightweight, high SPF sunscreen.

- Benefits of Using a Broad-Spectrum SPF Serum

Broad-spectrum protection means that a sunscreen formulation combines UV filters that can filter both UVA and UVB radiation. This helps protect your skin against the harmful UV rays that exist across the UVA/UVB spectrum.

So why SPF 45? Contrary to what you might think, brands don't just pick a number off the shelf. The SPF value is determined through rigorous testing—how long it takes skin to redden with the sunscreen vs. without. The Ordinary’s new product clocked in at SPF 45, which blocks just 0.2% less UVB radiation than SPF 50. In other words, you’re getting top-tier protection. Plus, it's broad spectrum, covering both UVA and UVB rays—so you’re shielded from premature aging and burning.

Review

Whether you're a sunscreen devotee or only remember to apply it occasionally, the question on everyone's lips is whether the new SPF is anything like its predecessor. Unlike the Mineral UV Filters, this formula is much thinner in texture. While The Ordinary calls it a "serum", it's more like a lightweight lotion — easy to apply and absorbed in moments, with no excessive rubbing or blotting required. 

It absorbs quickly without feeling uncomfortable or sticky, nor does it sting my eyes. Even better, it's non-comedogenic, which means it's less likely to clog pores and cause spots.

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