In general, I discourage use of hairdyes containing artificial coloring agents, which to my mind are as suspect in cosmetic products as they are in food.
总体来说，我不赞成使用带有人工色素染剂的染发剂，对于我来说，对化妆用品的不可信就像对食物中一样。
2
They share a pigment used in hairdyes, which can lead to problems down the line.
他们使用染发剂的一种色素，它可以完全导致过敏症。
3
Hairdyes applied to the head are absorbed through the scalp, where there's a very rich blood supply that may carry them throughout the body.