As consumer demand for mineral sun protection continues to grow, formulators are seeking UV filters that deliver outstanding performance without compromising aesthetics.
Eusolex® T-STE
from Susonity is a hydrophobic, surface-treated titanium dioxide designed to provide broad-spectrum UV protection while offering excellent dispersibility, improved transparency and formulation versatility.
Featuring a rutile titanium dioxide core with an alumina and stearic acid surface treatment,
Eusolex® T-STE
is optimised for modern sunscreen formulations, helping formulators create elegant mineral and hybrid SPF products with enhanced sensorial appeal.
Key Benefits
- Efficient mineral UV filter providing strong UVB protection with additional UVA coverage, supporting broad-spectrum sunscreen performance.
- Can contribute approximately 2 SPF units per 1% use level , depending on the overall formulation design.
- Hydrophobic surface treatment enables outstanding compatibility with cosmetic oils, waxes and silicone systems.
- Demonstrates excellent photostability and colour stability , even in formulations containing challenging ingredients such as Avobenzone, Ascorbyl Palmitate or Propyl Gallate, helping to maintain product appearance and performance over time.
- Supports improved transparency in well-dispersed formulations, helping to optimise the visual appearance of mineral sunscreen systems.
- Ideal for mineral and hybrid sunscreen systems, working synergistically alongside organic UV filters to maximise SPF performance .
- The high bulk density of Eusolex® T-STE enables easier handling and processing while supporting efficient incorporation into sunscreen formulations.
- Designed for modern sun care
Eusolex® T-STE
has been developed to meet the demands of today's sun care market, where consumers expect products that are both highly effective and pleasant to wear. The stearic acid surface treatment provides excellent oil dispersibility, allowing formulators to achieve finer pigment distribution, which is essential for maximising UV protection while maintaining a smooth, elegant skin feel.
Susonity
recommends thorough pre-dispersion using high-speed mixers or homogenisers to achieve optimal transparency and UV performance.
Ideal Applications
Eusolex® T-STE
is suitable for a wide range of cosmetic applications, including:
- Mineral sunscreens
- Hybrid sunscreen formulations
- Daily facial moisturisers with SPF
- Sensitive skin products
- Children's sun care
- Dermocosmetics
- Natural cosmetic formulations
- Foundations, sticks and other colour cosmetics with sun protection
- Supporting the shift towards more sustainable beauty
Susonity have created some example formulations which you can access here, the full formulation guide can be found below:
Alongside its formulation performance, Eusolex® T-STE supports the growing demand for naturally positioned products. The ingredient is:
- 100% Natural Origin Content according to ISO 16128
- Vegan
- Halal certified
- COSMOS 4.2 pending
These credentials make it an excellent choice for formulators developing next-generation natural and responsible sun care products.
INCI -
Titanium Dioxide (nano), Alumina, Stearic Acid
Why Choose Eusolex® T-STE?
Whether you're developing a high-SPF mineral sunscreen, a hybrid daily moisturiser or a colour cosmetic with added UV protection,
Eusolex® T-STE
offers an excellent balance of efficacy, formulation flexibility and consumer appeal. Its combination of broad-spectrum protection, superior dispersibility and natural positioning makes it a valuable addition to today's sun care formulations, helping brands create products that deliver both trusted protection and an enhanced sensory experience.
Want to know more?
Log in below to access the latest
formulation guide and brochure
and start formulating today!
Would you like to know more?
Please sign in or request access to get access to the full content. In case you have any questions, please click the "Request information" button below.
New customer?
Request access