In general, I discourage use of hair dyes containing artificial coloringagents, 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
Cleaning the surface - clean surface will maximize paint adhesion, and coloringagents to minimize the possibility of leakage.
清洗表面——清洁的表面将使涂料的附着力最大化，并将着色剂渗出的可能性降到最低。
3
Case number two – the milk might be fake, for example, it was made of starches rather than a cow's fresh milk. Or edible coloringagents may have been added to make it appear white.