Optical properties of bacterial nanocellulose as a replacement for chemical filters with endocrine-disrupting consequences: a natural and sustainable approach

Abstract

In this review, we focus on understanding the optical properties of natural mineral products for incorporation into cosmetics and personal care products. Specifically, we focus on titanium dioxide and bacterial nanocellulose as alternatives to replace endocrine-disrupting molecules present in sunscreens. We want to highlight the importance of replacing benzophenones. These chemicals are known for their UV absorption capacity and their endocrine-disrupting activity. We believe that the complete replacement of benzophenones should be immediate. We propose replacing them with mineral sunscreens, such as those containing titanium dioxide or zinc dioxide. This natural alternative would allow us to add natural nanocellulose (NBC), reinforcing the mechanism of action by increasing the product’s refractive capacity. To reach this conclusion, a total of 55 scientific publications were reviewed, covering topics such as toxicity, pharmacodynamics, alternatives, physics, optics, microbiology, and dermatology, among others.