Archaeological wood, particularly architectural wood, is susceptible to numerous deterioration factors due to exposure to environmental conditions, resulting in rapid decay. Therefore, the search for and enhancement of new eco-friendly materials, sourced from renewable and readily available resources, which are cost-effective and low in toxicity, represent a contemporary approach to preserving wood structures. This paper introduces eco-friendly materials such as hydroxypropyl cellulose (HPC), Nano cellulose (NC), and Nano Clay (Halloysite) (NH), derived from renewable natural sources. These materials can be utilized to formulate mixtures compatible with wood, treating its structure at various concentrations. The Klucel nanocomposite is developed to enhance the properties of hydroxypropyl cellulose (HPC) using nanomaterials. Mixtures of (HPC) 1% / (NC) 3-5% and (HPC) 1% / (NH) 3-5% were prepared and applied to naturally aged samples of a hardwood type, specifically beech wood. The efficiency of these materials was assessed by measuring the mechanical and optical properties of the treated samples, along with infrared FTIR, X-ray diffraction (XRD), and scanning electron microscope (SEM) examinations, to determine the optimal mixture. The results indicate the superiority of the mixture (HPC) 1% / (NC) 3% in enhancing properties without altering the chemical composition of the wood even after aging.