Rice husk Exfoliator

A gentle exfoliant with immaculate whiteness

Rice Husk Exfoliator is a natural exfoliant made from rice husk extract. Rice husk is a byproduct of rice processing and is naturally rich in plant-based amorphous silica. This high silica content gives our exfoliant an exceptionally white hue, which is highly sought after.

Thanks to its unique composition, Rice Husk Exfoliator provides effective yet gentle exfoliation, making it ideal for incorporation into a wide range of cosmetic formulations.

Plant-based amorphous silica

Amorphous silica (SiO₂) is a form of silica that lacks a crystalline structure, unlike crystalline silica (such as quartz). It is often derived from biological or thermal processes and is considered safer for cosmetic applications since it does not pose the respiratory risks associated with crystalline silica particles.

Formulation guide

Our R&D teams conducted an in-depth study to characterize the performance of Rice Husk Exfoliator in formulation and to define the ideal pH stabilization conditions to ensure the stability of your products.

Protocol:

• The study was carried out in water with different particle sizes of Rice Husk Exfoliator.
• The pH was adjusted using a citric acid solution, with the aim of stabilizing around pH 5.0, considered optimal for cosmetic formulations.

Results:

• The pH drops rapidly at low concentrations of citric acid, then gradually stabilizes at pH 5.0.
• Particle size plays a decisive role: the finer the particles, the greater the surface area, and the greater the amount of citric acid required.
• Tests conducted with 5%, 10%, and 15% concentrations of Rice Husk Exfoliator confirm a proportional relationship between the exfoliant concentration and the amount of citric acid to be added.

These data make it easy to extrapolate the adjustments to other concentrations.

Formulation tip:

To ensure long-term pH stability, we recommend combining the citric acid adjustment with a citric acid–sodium citrate buffer system.

• 100% natural
• 100% plant based
• Stable and compatible with all types of cosmetic formulations
• 100% upcycled