Was there actually an issue with the quality of the received hair?
My reading of the linked article was the issue with hair was a question of credit, in that stylists did not have the money, nor the credit to be able to hold inventory, and not that the hair itself was bad.
He seems to have executed well. Instead of Hairstylists maintaining the inventory, Mayvenn maintains the inventory and hair-stylist will only show samples to their clients. Mayvenn basically takes over from delivery to returns etc. It make the hair-saloon much safer because they do not hold expensive inventory which is a big problem.
My reading of the linked article was the issue with hair was a question of credit, in that stylists did not have the money, nor the credit to be able to hold inventory, and not that the hair itself was bad.