Evaluation of Cosmetic Spherical Particle by Using Small Particle Compressive Strength Analyzer

Naoaki Toyoda, Hiroyuki Asano, Hitoshi Sawada, Tsuyoshi Asai, Yasumasa Takao, Yasuhiro Shimada, Shigenobu Hatano
2019 Journal of the Society of Powder Technology Japan  
Currently, in the cosmetics industry, substitution of plastic micro beads (PMB) in pressed foundation (PF) has begun to prevent marine pollution by PMB. Therefore, in order to develop new substitutes, it is important to find the relevance between characteristics of spherical particles for cosmetics and PF feeling in use. In this study, we developed objective evaluation system for spherical particles by using Small Particle Compressive Strength Analyzer (NS-A100), which have been widely used for
more » ... the strength analysis of granules in the field of pharmaceutical, food industries and others. Five kinds of spherical particles were selected. As the results, apparent Young's modulus and pseudo-permanent strain ratio derived from NS-A100 measurement correlated to the soft feels and anti-shock property of PF, respectively. These results indicated that this system can be applied to evaluation of single particle property and estimation of formulation characteristics as well.
doi:10.4164/sptj.56.556 fatcat:xpqfhsxzzvhvpftuzkinpfmlnm