Quillaia Extract WS (Glycerin (and) Quillaja Saponaria Bark Extract) is a versatile and preservative-free botanical extract derived from the bark of the Quillaja Saponaria tree. Known for its soothing and cleansing properties, this extract combines the benefits of natural saponins with glycerin to provide hydration and enhance the skin's barrier function. An organic glycerin variant is also offered, catering to diverse formulation needs. Additionally, formulations may include a customizable blend of preservatives, such as sodium benzoate, potassium sorbate, and phenoxyethanol, ensuring stability while maintaining the efficacy of the extract. This product can further be tailored with alternatives like butylene glycol or propylene glycol, making it a flexible choice for various cosmetic applications aimed at nourishing and revitalizing the skin.