the used jeans

The used or "acid wash" look is created by means of abrading the jeans and/or treating them with chemicals, such as acryl resin, phenol, a hypochlorite, potassium permanganate, caustic soda, acids etc.^[25]

Ripping or distressing of jeans, though also arising naturally as a result of wear and tear, is sometimes deliberately performed by suppliers - with distressed clothing sometimes selling for more than a nondistressed pair. For example, Pucci sold "embellished mid-rise boyfriend jeans the history of used jeans.