Prior to dry cleaning, dry cleaning solution is first applied to oil and similar stains. This solution is to soften stains that are hard to settle on the skin and to easily remove them from the surface of the skin. After this process, normal dry cleaning processes are started. However, dry cleaning solutions naturally contain a number of chemicals. This may cause unwanted problems on the skin during application.

In this respect, the physical structure of the skin and the paint on it must be resistant to dry cleaning solutions to a certain standard.

The ISO 11643 standard is designed to determine the resistance of unused and not yet dry-cleaned skin color to solvent solutions. However, during these tests, there is a risk of skin color changes and staining of the adjacent fabric used. The skin coating may also be damaged. Absorbed water in the skin, adjacent fabric or solution is not seen as a critical factor in the assessment of color fastness.

Tests are carried out by authorized laboratories to determine the sensitivity of the skin to dry cleaning solution within the scope of specific tests. In these tests, national and international standards are taken into consideration. The standards for determining the fastness of the skin against dry cleaning solution are as follows:

• TS EN ISO 11643 Skin - Color fastness tests - Determination of color fastness to dry cleaning solutions of small samples

This standard specifies a method for determining the color of the unused skin that has not yet been subjected to a dry cleaning process and after the finishing process and the resistance of the finishing process to the dry cleaning solutions. This standard does not cover materials used with leather or clothing made entirely of leather. This standard is intended primarily as a guide for the application of the dry cleaning operation in the cleaning process.