关注了一下大家染发剂的讨论，感觉不安全的成分主要是PPD （跟hydrogen peroxide混合后致癌）。google上： “Mutagenicity: When P-phenylenediamine reacts with hydrogen peroxide, as it does in the preparation of hair dyes, it can form a mutagenic, or DNA-altering, substance called Bandrowski's base. Bandrowski's base has been shown to be strongly mutagenic and possibly carcinogenic.” 别的成分如ammonia的气味大，现在大多被ethanolamine替代了。ethanolamine我查了一下好像毒性较小。 基于以上原则，我找到这一款染发剂，没有PPD，ammonia，phthalate等，ingredients 感觉好像是比较安全的一个选择，大家觉得怎么样？牌子叫 "Adore Semi Permanent Hair Color"。 https://www.amazon.com/Adore-Shining-Permanent-Colour-Black/dp/B00BXMFUZE/ref=cm_cr_arp_d_product_top?ie=UTF8&th=1
别的成分如ammonia的气味大，现在大多被ethanolamine替代了。ethanolamine我查了一下好像毒性较小。
基于以上原则，我找到这一款染发剂，没有PPD，ammonia，phthalate等，ingredients 感觉好像是比较安全的一个选择，大家觉得怎么样？牌子叫 "Adore Semi Permanent Hair Color"。 https://www.amazon.com/Adore-Shining-Permanent-Colour-Black/dp/B00BXMFUZE/ref=cm_cr_arp_d_product_top?ie=UTF8&th=1
没想到丑女还懂得用这个