Dermatology Consulting Services, PLLC, High Point, North Carolina, USA.
J Cosmet Dermatol. 2022 Sep;21(9):3925-3928. doi: 10.1111/jocd.15212. Epub 2022 Jul 19.
Permanent hair dye is the most commonly used anti-aging procedure used by both men and women. However, permanent hair dye can cause irritant contact dermatitis due to ammonia and allergic contact dermatitis due to paraphylenediamine (PPD).
This research examined an ammonia-free and PPD-free permanent hair dye in 50 ethnically diverse females 21-91 years of age who were current users of permanent hair dyes. Subjects were patch tested prior to dyeing. Two dye sessions were undertaken at baseline and 2-6 weeks post-baseline depending on the dyeing habits of the subject.
50/50 subjects successfully completed the study with no incidence of allergic or irritant contact dermatitis. After 2 dyeing procedures, the dermatologists rated an 87% improvement in hair shine, 90% improvement in hair color, 88% improvement in hair moisturization, 87% improvement in hair porosity, and 88% improvement in hair combability.
A MEA-based ammonia-free cream hair color without PPD or resorcinol was safe for use on the hair and scalp of females with diverse hair types and textures.
永久性染发剂是男性和女性最常使用的抗衰老程序。然而，永久性染发剂可因氨而引起刺激性接触性皮炎，因对苯二胺（PPD）而引起过敏性接触性皮炎。
本研究在 50 名种族多样化的女性中进行，这些女性年龄在 21-91 岁之间，她们是永久性染发剂的当前使用者。在染发前进行斑贴试验。根据受试者的染发习惯，在基线和基线后 2-6 周进行两次染发。
50/50 的受试者成功完成了研究，没有发生过敏性或刺激性接触性皮炎。经过 2 次染发程序后，皮肤科医生评估头发光泽改善了 87%，头发颜色改善了 90%，头发保湿改善了 88%，头发多孔性改善了 87%，头发梳理性改善了 88%。
一种基于 MEA 的无氨乳膏状染发剂，不含 PPD 或间苯二酚，对具有不同发质和纹理的女性的头发和头皮使用是安全的。
