WHY DETOX? a detox can help rebalance your scalp. It rids your hair of suffocating buildup while nourishing the scalp. It helps stimulate hair follicles, allowing for hair growth, and clears the scalp of dandruff & buildup that can cause acne on the scalp. …. Can I detox my extensions? YES! Remove toner and purple shampoo build up to bring back vibrancy and shine.