Proper care includes providing a wood friendly environment. Many of the internal environmental issues that affect human comfort also contribute to a wood healthy environment. Specifically, controlled temperature and humidity with minimal changes from day to day and season to season will ensure the stability and life of your wood furniture.
Wood is very sensitive to changes in relative humidity. As the weather changes, so does the relative humidity in your home and in the moisture content of the wood in your furniture.
This means that furniture is constantly expanding and contracting.
The ultraviolet rays of the sun will damage a finish and bleach the wood underneath.