INCI: TrihydroxystearinProduct Categories: Rheology Modifier, Suspending Agent, Thickener
RHEOBYK-7590 is a hydrogenated castor oil derivative for use in cosmetic and personal care applications as a rheological additive for the oil phase. It provides excellent thickening, package stability, pigment suspension, and a high degree of thixotropy. The efficiency of this product is sensitive to temperature and system polarity.
This product is vegan and certified to the natural and organic standards of ECOCERT.
Features & Benefits of RHEOBYK-7590
- Efficient thickener
- Forms white or translucent gels
- Acts as skin conditioning agent and water repellent
- Creams & Lotions
- Sunscreen Products
- Hair Care Products
- Antiperspirant Deodorant Sticks
- Pressed Powders
RHEOBYK-7590 should be added to the oil phase or at the beginning of the dispersion process, preferably by pre-mixing 5 – 10 minutes with the solvent or oil.
For optimal performance, this product should be fully activated by heating the batch to a temperature between 45°C and 65°C and applying high shear mixing for 20 minutes while maintaining the temperature. Within this range, the appropriate temperature to activate this product depends on the solvent used – less polar solvents need a higher temperature for the activation.
RHEOBYK-7590 is sensitive to temperature. Seeding (building of soft gel-like particles) may occur if the activation temperature is not high enough or if the maximum activation temperature of 65°C is exceeded. If this happens, the lot may be reworked by bringing the batch to an activation temperature (55 – 65°C) and applying intensive high shear.