TEGO® FILMSTAR BST1

A biodegradable film former designed to support modern sun care with stronger efficiency, elegant textures, and a more future-facing formulation profile.

Sun care has changed. High protection is now expected across more moments of use – from daily routines to hybrid skincare and beauty formats. TEGO^® FILMSTAR BST1 helps formulators respond to these expectations by supporting SPF efficiency across diverse sun care concepts while keeping formulations wearable and versatile.

Achieving higher protection often increases formulation complexity. More demanding targets can impact sensory appeal, push systems toward heavier textures, and complicate stabilit – especially in lightweight formats where consumers expect an invisible, comfortable feel.

At the same time, conventional film-forming approaches are under scrutiny as brands look for more future-facing alternatives. The new formulation brief is clear: deliver high protection and a great sensory experience while moving toward a more responsible formulation profile.

TEGO® FILMSTAR BST1 is a functional biopolymer developed to support modern sun care design across a wide range of formats. Built on Evonik’s polyglycerin ester expertise, it helps improve protection efficiency while preserving the sensorial elegance and formulation flexibility today’s SPF products demand.

Instead of relying solely on higher filter loads or heavier structuring strategies, TEGO® FILMSTAR BST1 supports a more efficient approach to building protection – designed for contemporary textures, modern routines, and evolving sustainability expectations.

Designed to support a more uniform protective film.

TEGO® FILMSTAR BST1 helps create a more homogeneous protective layer, supporting improved UV filter distribution and contributing to stronger SPF efficiency across diverse systems.

The result is a solution designed for formulators who want to push performance forward – without sacrificing the wearability and elegance that increasingly define modern sun care.

TEGO® FILMSTAR BST1 is designed for broad relevance across different texture targets, formulation architectures, and sun care directions. That versatility matters as SPF expands into more usage moments and product formats. 

From classic sun protection to daily SPF skincare concepts, TEGO® FILMSTAR BST1 supports modern development goals: efficient performance, formulation flexibility, and an experience that feels right for everyday wear.

TEGO® FILMSTAR BST1 supports modern sun care concepts with a more future-facing material profile. It gives brands a way to advance performance while moving toward a more responsible formulation direction – supporting innovation aligned with where the category is heading.

1 Natural Origin Index Ino=1.00, Description and Origin of plant-based materials: Rapeseed/canola (Brassica), castor (Ricinus communis); 2 EOP vegan: Do(es) not and has (have) not involved the use of any animal* product, by product or derivative including processing aids within the direct manufacturing processes at Evonik. Raw materials utilized at Evonik do not contain products, by-products or derivatives from animal origin**. We herewith confirm that, to the best of our knowledge, our company Evonik Operations GmbH, supplier for the product, strives diligently to minimize cross-contamination from animal substances used in other (non-vegan) products as far as is reasonably practicable. *: The word “animal” to refer to entire Animal Kingdom that is all vertebrates and all multi-cellular invertebrates. **: Internal assessment or based on supplier declarations; 3 CFI - Cruelty Free International

Modern SPF products increasingly aim to deliver more than UV protection alone. Consumers look for formulas that feel caring, comfortable, and compatible with sensitive-skin needs and daily wear.

TEGO® FILMSTAR BST1 supports SPF concepts that align protection with a more skin-conscious product experience.

Inspiration across multiple SPF formats.

TEGO® FILMSTAR BST1 is featured in concept directions that illustrate its relevance across a range of sunscreen experiences  –   from lightweight textures to richer protective formats.

This page covers the essentials. The complete presentation provides deeper performance context, concept portfolio details, and technical background to support your next sun care development step.