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用酸强化化学处理的人类头发
Daijiazi Zhang1, Nawel Baghdadli1, Andrew J Greaves1
1L'Oréal Research & Innovation, Aulnay-sous-Bois, France.
International journal of cosmetic science
|January 6, 2025
概括
酸 (CA) 处理显著改善化学损伤的头发的结构完整性和机械性能. 这种有机酸通过增加交叉连接和降低水平来增强头发,提供更好的头发增强.
科学领域:
- 头发 化品 科学 科学
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 经过化学处理的头发,包括漂白,染色和永久头发,通常会显示结构完整性受到损害.
- 有机酸通常用于头发化品,但它们用于增强头发的特定机制需要详细研究.
- 了解酸 (CA) 如何与受损头发相互作用,对于开发有效的护发配方至关重要.
研究的目的:
- 系统地评估酸 (CA) 对各种化学处理的头发类型的增强效果.
- 阐明CA增强受损头发的结构和机械性能的潜在机制.
主要方法:
- 用化学方法处理的头发样本的制备 (高升级漂白,中升级漂白,永久染色,永久性和染色).
- 酸 (CA) 处理的应用.
- 使用物理技术评估增发:高压差分扫描热量计 (HPDSC),微型拉伸测试 (MTT),循环疲劳拉伸测试 (CFTT),微型X射线衍射 (microXRD) 和化学分析 (元素,氨基酸).
主要成果:
- 酸治疗增加了酸相关蛋白 (KAP) 交联密度,表现为变性化温度上升6.7%15.0%.
- 机械性能得到了增强:拉伸弹性模块增加了7.5%23.5%,疲劳耐力提高了56%124%.
- CA治疗减少了21%-42%的头发水平,XRD证实减少了肥的形成,这表明化和pH效应有助于强化.
结论:
- 酸有效地强化化学损伤的头发,性能根据先前化学处理的类型和程度而异.
- 这些发现强调了头发损伤,治疗类型和强化疗法的有效性之间的复杂相互作用,需要进一步研究有针对性的解决方案.
- 这项研究为创新的,个性化的护发产品开辟了道路,这些产品可以解决特定的损伤概况.
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