Chapter 14 - Biosynthesized colloidal metallic nanoparticles-based nanocosmetic formulations

Abstract

Nanotechnology is usually measured to be the prospect of the beauty industry and contemporary antiaging program. The metallic nanoparticles (MNPs) are employed as an important agent in cosmetic and beauty preparations. MNPs are mainly synthesized through three approaches—physical, chemical, and biological. Because of certain disadvantages and limitations of physically and chemically synthesized nanoparticles (NPs), there was a growing need for a toxic-free, high-yield, energy-saving, green origin, biocompatible, and environmental-friendly method. Green biosynthesized NPs are the unconventional method, which is hydrophilic, biocompatible, and toxic less. Consequently, biologically synthesized MNPs are superlative components for nanomedicine and nanocosmeceuticals. Nowadays peoples are highly concerned and worried about the adverse effects of cosmeceutical preparations and the incorporation of nanomaterials (NMs) in the composition of products. As the people's demand for herbal cosmeceuticals is in demand, the incorporation of biosynthesized NMs in cosmetic products might lead to a new dimension. In this review, the process of biosynthesis of MNPs and types used in cosmetics preparations is presented. The major nanocosmetic formulations, NMs safety assessment process, the toxicity of biosynthesized nanocosmeceuticals, followed by the recent advances regarding nanoproduct regulations. Several nanostructures are being experienced in cosmetics, and the rapid proliferation and commercialization of nanotechnology in cosmeceuticals have encouraged enormous technical and economic hopes; on the contrary, it has also raised numerous concerns in respect of safety and public health in case of prolonged applications. Thus, it is highly recommended that the biosynthesized MNPs-based cosmetic products should be made following safety regulations and used in such a way that abuser and environmental safety are abundantly confined. In present days, the biosynthesized colloidal MNPs are ideal components for various preparations mainly in cosmetics under their anticipated biocompatibility or even absolute lack of toxicity.