Natural fillers made from plant fibers, wood flour, or mineral-based compounds can seamlessly repair cracks, holes, or dents without synthetic additives. These fillers are free from formaldehyde, phthalates, or other hazardous contaminants found in conventional putties. They integrate easily with most wooden surfaces and are compatible with natural or plant-based finishes. In addition to their low impact on indoor air quality, natural fillers biodegrade more readily at end of life, making them a clear choice for anyone devoted to green restoration practices.