Titanium dioxide coated with silica 30 g

Titanium dioxide U-T is an inorganic pigment with UV protection

Titanium dioxide U-T was developed by the Spanish company ADParticles and is a silica-coated titanium dioxide with sun protection properties. It is suitable for use as a UV filter in both care and decorative cosmetics. The particle size distribution of this product is not in the nanometre range (1-100 nm), is completely safe to use and provides a high level of UV protection.

Component characteristics and usage

INCI: Titanium Dioxide (and) Silica

CAS № 13463-67-7, 7631-86-9

Dosage: 5 - 15 %

Usage: dispersed in a fatty or aqueous phase. Detailed description of the process of use of the component is described below.

Special features: free of nanoparticles, aluminium, preservatives, antioxidants, fragrances, dyes etc.

Not tested on animals.

Ecocert and Cosmos certified.

Storage: in a dry, dark place in tightly closed packaging. Protect from high humidity.

Use in cosmetics

Component consists of a composition of TiO2 and SiO2, and is developed using a patented technology by ADParticl. The ingredient provides broad UV protection and ensures the safety and efficacy of the final formula. The component's particle size exceeds 100 nanometres and is completely safe for cosmetic applications.

UVA absorption spectrum: SPF and UVA PF protection

When adding this active component to natural cosmetics, you can be guided by the following characteristics:

• UVA and UVB protection
• Critical wavelength < 380 nm
• UVA/UVB ratio ≥ 0.8 F

SPF and UVA PF value are shown in the graph below for increasing Titanium dioxide filter concentrations in the finished formulation. The filter concentrations in the final formulas were 5, 7.5, 10 and 12%. As a result, you can see that:

• 5% = 5 SPF
• 7.5% = 9 SPF
• 10% = 15 SPF
• 12% = 17.5 SPF

Photostability of the sunscreen filter

A photostability test was performed to evaluate the change in SPF after irradiating the sample with UV light. Irradiation was carried out using an Oriel LCS-100TM Small Area Sol1A (Solar Simulator) instrument equipped with a 100 W continuous xenon lamp that generates 1 solar radiation with an AM1.5G filter (surface power density 166 mW/cm2). A specific filter for UVA-UVB radiation was used.

SPF measurements were performed before and after 1, 2, 3, and 4 hours of irradiation using a spectrophotometer equipped with a 125 W CW xenon lamp operating at 75 W (SPF-290S analyser system). After 4 irradiation sessions of 1 hour duration, no decrease in SPF was observed.

The photostability value exceeds 80%, so Effective U-T is considered photostable (Garoli et al. J. Dermatol. Sci. 52 (3), 193-204). The concentration of the filter in the sample was 7.5%.

How to make sunscreen: example formulation from the manufacturer

• add Titanium dioxide U-T to the aqueous phase (can also be added to the fatty phase), disperse with constant stirring for 10 minutes, then heat also the aqueous phase with constant stirring,
• mix both phases (the sequence of introduction of phases one into another depends on which emulsifier you use), homogenise until the emulsion cools down,
• after cooling down add the remaining assets that do not tolerate heat.

Sunscreen UV-Filter Titanium dioxide U-T scope of application:

• sunscreen cosmetics
• children's sunscreen cosmetics decorative cosmetics with SPF,
• including BB and CC cream
• make-up bases
• daily creams for all skin types for face and body.