News Letter

The global sun care market-especially the U.S.-is entering a new era.

For decades, strict FDA OTC monograph regulations have limited the use of new UV filters in the U.S., making it difficult to develop broad-spectrum (UVA/UVB) sunscreens with the clear, elegant skin feel seen in Europe and Korea.
Now, that is changing. The U.S. FDA has officially added Bemotrizinol (BEMT) to the sunscreen monograph as a GRASE active ingredient—the first new UV filter to enter the U.S. market in more than 20 years.

Why BEMT? A New Challenge for Formulators

BEMT is one of the most effective broad-spectrum UV filters, delivering outstanding UVA/UVB protection with excellent photostability. Already trusted in global markets for decades, it has demonstrated a strong safety profile with minimal skin absorption.

However, every breakthrough comes with a formulation challenge.
Due to its low solubility, BEMT requires a relatively high level of oils to dissolve effectively. At higher concentrations, it can introduce an oily feel and unwanted tackiness. The real challenge is to maintain formulation stability while delivering the light, dry-touch sensory experience that U.S. consumers expect.

Challenge 1. Solubility Limits of BEMT

Achieving high SPF with a lightweight skin feel is not always easy.
To incorporate BEMT at around 3%, more than 30% of the oil phase may be required for proper solubilization. This can make the formulation feel heavy, greasy, and less appealing for modern sunscreen users.

Challenge 2. Heavy and Sticky Skin Feel

Conventional formulations dissolve organic UV filters directly into the oil phase, which can increase greasiness and tackiness.
As the level of BEMT increases, the sunscreen film on the skin tends to become thicker, resulting in a heavier, less comfortable skin feel.

[Sunjin's Key Solution] Meet SUNSIL-S45, the Perfect Partner for BEMT

With BEMT now approved for the U.S. market, Sunjin introduces its innovative solution-“SUNSIL-S45”.

Powered by Sunjin's proprietary encapsulation technology, SUNSIL-S45 stably entraps UV filters within porous silica beads, helping overcome the key formulation challenges associated with BEMT. The result is greater formulation flexibility without compromising performance or sensory feel.

Benefit 1. Better UV Performance

SUNSIL-S45 is designed to help formulators use BEMT more efficiently. In performance testing, SUNSIL-S45 showed higher SPF performance than conventional BEMT under the same conditions, while maintaining excellent UVA protection.

For formulators targeting high-SPF sunscreen systems, SUNSIL-S45 offers a powerful new advantage.

Benefit 2. Lightweight Texture with a Dry-Touch Finish

By reducing the amount of BEMT that needs to be dissolved directly into the oil phase, SUNSIL-S45 enables lighter, more comfortable sunscreen formulations.

[Key Benefits]

• Reduced tackiness
• Less greasy feel
• Fresh, dry-touch finish
• Greater flexibility for lightweight sunscreen formulations Ideal for developing the next generation of daily sun care products that consumers love to wear every day.

Benefit 3. Improved Formulation Stability

Beyond encapsulating UV filters, SUNSIL-S45 also helps stabilize formulations at the interface.
In comparative stability testing, conventional BEMT formulations showed phase separation during long-term storage, while formulations containing SUNSIL-S45 maintained excellent stability.
As SPF levels increase, formulation stability becomes even more critical-and SUNSIL-S45 helps formulators meet that challenge.

Benefit 4. Reduced Fabric Staining

Some organic UV filters can cause yellow staining on clothing and fabrics.
By encapsulating UV filters within porous silica beads, SUNSIL-S45 minimizes direct contact with fabrics. In washing tests, formulations containing SUNSIL-S45 showed little to no visible staining, even after repeated laundering.

🔎 FAQ — UV Capsule Series (SUNSIL-S45 / SUNSIL-S)

■ Q1. How is the Silica UV Capsule different from conventional organic UV filters?
Conventional organic UV filters, such as BEMT and Avobenzone, must be dissolved in the oil phase, often increasing the oil content in O/W formulations. SUNSIL-S45 encapsulates UV filters within porous silica beads and is dispersed in the water phase, enabling lighter formulations with a fresher skin feel.
■ Q2. Can SUNSIL-S45 be used in both W/O and O/W formulations?
SUNSIL-S45 is designed for O/W formulations and should be dispersed into the water phase. It is not recommended for W/O systems, as certain oils may dissolve the encapsulated UV filters and compromise formulation stability.
■ Q3. What types of sunscreen formulations is SUNSIL-S45 suitable for?
SUNSIL-S45 is ideal for a wide range of lightweight O/W sunscreen formats, including creams, fluids, lotions, and tone-up sunscreens. It is especially well suited for high-SPF and daily sun care formulations that require a light, comfortable skin feel.

Now is the perfect time to get ready for the next generation of U.S. sun care with SUNSIL-S45, Sunjin’s key solution for high-performance, stable, and lightweight sunscreen formulations.

<Meet Us at in-cosmetics Korea 2026!>

Visit the Sunjin Beauty Science booth to discover our latest innovations, explore cutting-edge formulation solutions, and connect with our experts. We look forward to seeing you there!

If you have any questions or would like to learn more about SUNSIL-S45, please feel free to contact us using the details below.

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