Wetting and spreading kinetics of biological fluids has gained a substantial interest recently. The importance of these fluids in our lives has driven the pace of publications. Globally scientists have ever growing interest in understanding wetting phenomena due to its vast applications in biological fluids. It is impractical to review extremely large number of publications in the field of kinetics of complex biological fluids and cosmetic solutions on diverse surfaces. Therefore, biological and cosmetic applications of wetting and spreading dynamics are considered in the following areas: (i) Spreading of Newtonian liquids in the case of non-porous and porous substrates. It is shown that the spreading kinetics of a Newtonian droplet on non-porous and porous substrate can be defined through theoretical relations for droplet base radius on time, which agree well with the experimental results; (ii) Spreading of blood over porous substrates. It is shown that blood, which has a complex non-Newtonian rheology, can be successfully modelled with the help of simple power-law model for shear-thinning non-Newtonian liquids; (iii) Simultaneous spreading and evaporation kinetics of blood. This part enlightens different underlying mechanisms present in the wetting, spreading, evaporation and dried pattern formation of the blood droplets on solid substrates; (iv) Spreading over hair. In this part the wetting of hair tresses by aqueous solutions of two widely used by industry commercially available polymers, AculynTM 22 and AculynTM 33, are discussed. The influence of non-Newtonian rheology of these polymer solutions on the drainage of foams produced from these solutions is also briefly discussed.

近来，生物流体的润湿和扩散动力学引起了人们的极大兴趣。这些液体在我们生活中的重要性推动了出版物的发展。由于其在生物流体中的广泛应用，全球科学家对了解润湿现象的兴趣日益增长。在复杂的生物流体和化妆品溶液在不同表面上的动力学领域中，审查大量出版物是不切实际的。因此，在以下领域中考虑了湿润和铺展动力学的生物学和化妆品应用：（i）在无孔和多孔基质的情况下，牛顿液体的铺展。结果表明，牛顿液滴在无孔和多孔基体上的扩散动力学可以通过液滴的基半径随时间的理论关系来定义，与实验结果吻合良好；（ii）在多孔基质上散布血液。结果表明，具有简单非牛顿流变学特性的血液可以通过简单的幂律模型成功地建模，以剪切稀化非牛顿液体。（iii）血液的同时扩散和蒸发动力学。这部分启发了在固体基质上液滴的润湿，散布，蒸发和干燥图案形成过程中存在的不同潜在机制。（iv）散布在头发上。在本部分中，将讨论两种被工业上广泛使用的聚合物AculynTM 22和AculynTM 33的水溶液润湿发束的方法。还简要讨论了这些聚合物溶液的非牛顿流变学对由这些溶液产生的泡沫的排水的影响。