Using Synthetic Squalene (Hydrogenated Polyisobutene) as a Binder in Pressed Powder

Yes, the viscous type of Squalene you mentioned, often used in lipsticks (which is typically synthetic Squalene, with the INCI name Hydrogenated Polyisobutene), can potentially be used in pressed powder formulations.

This ingredient is a viscous oil suitable for makeup products and can be mixed with powder. While its main described functions are viscosity adjustment and adding shine, Hydrogenated Polyisobutene is also known to function as an emollient and film-former, which can help bind powder particles together in a pressed formulation and improve texture.

It can be used at a rate of 1-100% in cosmetic formulations. The optimal percentage for use as a binder in pressed powder would require testing within your specific formula to achieve the desired pressability and texture.

Note that this synthetic Squalene (Hydrogenated Polyisobutene) is different from Squalane (derived from sources like Olive), which is a lighter oil primarily used for skin conditioning.