Can you colour fast ( colour fix ) on Material Caran d'ache water soluble wax pastels .?

If so how and wot do you use? As I have so T-Shirt designs that I would like to prudes and sala. 3. Other related Questions. Wot would u pay 4 a hand printed and colour T? Wot should be the care instructions? How long do you think it would last on the front of a t-shirt? Guessing that most t's only last at the most 2 years.