The product is mixed well with 30g of the second agent (ferric sulfate) and 5g of the conditioning agent and mixed well before use, and then uniformly applied to the hair. After 20-30 minutes, rinse well with lukewarm water, wash thoroughly with warm water at the end. Multi-dose is gradually increased or decreased according to the amount of provocation.
Caution: Please use both in two hours. After drying, discard the used container and pump together with remaining amount. Containers and pumps used can not be reused.
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