A process for obtaining an aged or faded effect on garments made of protein fibres such as wool, cashmere and silk comprises the following steps:
- introduction into a tumbler of a plurality of granules of inert materials, which are particularly light in order not to damage the very fine fibres of which the garments are made, the garments being previously imbibed with a chemical product for inhibiting dyeing of the fabric, of the type commonly referred to as "dye retardant"; the tumbler being pre-arranged in order not to cause migration of the aforesaid chemical product through holes or openings;
- introduction of the raw confectioned garments, whether jerseys or outerwear, that are to undergo treatment into the aforesaid tumbler;
- extraction of the garments from the tumbler at the end of migration of the chemical product for inhibiting dyeing of the outer surface of the garments by the granules, and steaming in autoclave to fix the chemical process, i.e., the product for inhibiting dyeing of the outer surface of the garments; and
- subsequent dyeing of the garments with a specific selection of dyes that must each time be defined according to the desired result.