When traditional chemical materials face environmental bottlenecks and high-end synthetic materials are subject to high energy consumption and non-renewable properties, the new materials industry is ushering in a technological change that 'returns from artificial synthesis to nature.' As the core representative of biomass nanomaterials, nanocellulose has broken through the three core barriers of renewable natural resources, high nano-performance empowerment, and low carbon throughout the life cycle. With a native substrate derived from plants, it has achieved mechanical properties and functional attributes comparable to high-end artificial materials, and has become a core key material for iterative upgrades in the current fields of new energy, biomedicine, green manufacturing, and high-end composite materials. 1. Basic definition of materials Nano-upgraded natural fibers Cellulose is the most abundant natural polymer resource on earth. It is widely found in biomass raw materials such as wood, bamboo fiber, crop straw, cotton and linen, and is the green substrate with the longest history of human application. Limited by micron-scale size and single structural characteristics, traditional cellulose materials have long been limited to papermaking.

In the context of rapid iteration of the green daily chemical and pure beauty industries, natural biomass functional raw materials have become the core breakthrough for the upgrading of daily chemical formulas. Traditional daily chemical formulas are highly dependent on synthetic additives such as acrylics, carbomers, and cellulose derivatives. Although these raw materials can achieve basic functions such as thickening, suspension, and film formation, they generally have shortcomings such as poor system tolerance, sticky skin, easy sensitization, and poor biodegradability. They are difficult to adapt to the current industry development needs for safety, efficacy, and low carbonization. Nanocellulose, as a nanoscale polymer material derived from plant biomass, relies on its unique one-dimensional nanostructure, controllable rheological properties, excellent biocompatibility and environmental friendliness. It can optimize the daily chemical product system from multiple dimensions such as formula stability, skin feel, efficacy utilization, and green attributes. It is currently the new daily chemical functional substrate with the most application potential. This article takes the formulation and application technology mechanism of nanocellulose as the core, from the perspective of structural characteristics, core

With the deep integration of pure beauty, functional beauty and light luxury beauty, the market has set higher standards for the formula texture, usage experience and efficacy stability of smear-on facial masks and innovative functional masks. Many current mainstream facial mask products generally rely on traditional synthetic thickening stabilizers such as carbomer and xanthan gum. They have long-term formula shortcomings that are difficult to avoid: the transparent system is easy to become cloudy, and functional particles such as natural petals, essence beads, and plant scrubs are easy to settle and stratify, making the product attractive. At a discount; at the same time, traditional colloids are sticky and thick, have poor breathability, make the skin stuffy on the face, are easy to rub mud, and leave a sticky feeling. Moreover, the moisturizing only stays on the surface for instant hydration, and the water-locking endurance is insufficient. It cannot meet the four core needs of high-definition texture, refreshing skin feel, long-lasting moisturizing, and stable effects. Aiming at the pain points of industry formulations, nanocellulose (CNF) derived from natural plants has become a new generation to replace traditional chemical colloids with its unique nano-three-dimensional network structure and excellent thixotropic rheological properties.