Hair dye additive and preparation method thereof

The invention discloses a hair dye additive and a preparation method thereof. The hair dye additive is prepared from the following components in parts by mass: 3 to 6 parts of radix astragali seu hedysari, 1 to 3 parts of flos caryophylli, 3 to 5 parts of liquorice roots, 1 to 3 parts of cinnamyl alcohol, 3 to 6 parts of cattail pollen, 3 to 6 parts of bletilla striata extract, 1 to 3 parts of deionized water, 0.5 to 1 part of protein hydrolysate, 5 to 8 parts of mulberry leaves, 2 to 6 parts of benzaldehyde, 4 to 7 parts of glycerinum, and 2 to 4 parts of agilawood. The hair dye additive can improve the hair dyeing effect; and moreover, the consumption and acting time of substances irritating to skin can be reduced, and the irritation and injury of the hair dye to the hair and the scalp can be alleviated and remedied. 本发明公开了种染发剂添加剂及其制备方法，由以下质量份数配方成分组成：黄芪3-6份、丁香1-3份、甘草3-5份、肉桂醇1-3份、蒲黄3-6份、白芨提取物3-6份、去离子水1-3份、水解蛋白0.5-1份、桑叶5-8份、苯甲醛2-6份、甘油4-7份、沉香2-4份，本发明可以改善染发效果，并且可以减少刺激皮肤的物质的用量和作用时间，缓解和弥补染发剂对头发和头皮的刺激和损伤。