Umm, you sure, I always heard that it’s better to use sulfate and alcohol free shampoos, as regular shampoos would ruin the system or worse the system would not last as long? Maybe I am wrong, can you explain why most hair replacement companies will always recommend sulfate free shampoo instead of a shampoo just sold over the counter at Walmart or target?If you´re having a system with real hair, you can use any shampoo