一个人的毛发通常被认为是动物鬃毛的残余，具有社会和生物学的双重作用。它是每个人的特点，是青年、健康和生育能力的标志。
脱发（秃头症），多余的毛发生长（多毛症）或少年白可能导致社会和心理障碍。化妆品行业正在努力为其寻找解决方案。
QIMA Life Sciences 提供了一个模型，该模型直接从 Philpott 描述的得到广泛承认的标准条件中导出。 它基于对人头皮样品的即时显微解剖，使实验过程非常严格，并依赖于生物样品。
这种人毛囊模型本身是一个孤立的器官，代表了正常分化皮肤细胞共培养的“自然”模式（角质形成细胞，也有成纤维细胞和黑素细胞）。皮脂腺单位是一个复杂的系统，由多能细胞储备循环自我更新。头发更新周期随很多遗传、自分泌和旁分泌因素以及环境因素的不同而变化。
这些参数可以使用显微镜和形态测定方法进行分析，也可以通过更复杂的分子方法（RT-qPCR, 组织学和免疫组织化学，ELISA等）进行分析。
QIMA Life Sciences 具有以下体外或离体模型供您使用:
在这些模型上，我们可通过衡量以下项来评估活性化合物对脱发和头发生长的效果：
以下是 QIMA Life Sciences 在头发生长和脱发领域提出的所有标准测定中的几个例子：
QIMA Life Sciences
Headquarters
1bis rue des plantes - CS 50011
86160 Gençay - France
Tel. +33 (0) 5 49 36 11 37
Mail: ls@qima.com
International offices
France - Labège
USA - Buffalo, NY
Brazil - Botucatu, SP
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Canities and hair pigmentation
Cosmetics, Hair follicleCanities (hair greying) has a wide-ranging social and cosmetic impact. QIMA Life Sciences is focusing on its physiopathology, underlying causes and treatments.
Hair: Follicle, Associated Structures and Growth
Cosmetics, Hair follicleHair follicles are skin adnexa which are able to regenerate in a complete, autonomous, cyclic and asynchronous manner. The histological analysis of the pilosebaceous unit reveals a three-element organization: the epithelial compartment, the mesenchymal compartment and the sebaceous gland.