2009 Volume 9 Issue 1 Pages 69-80
The cosmetic puff is commonly said to have compatibility between sense of use of the puff and the cosmetic product at the cosmetic industry. When the cosmetic is designed, the cosmetic makers spend many hours for complex sensory evaluation to judge the compatibility. If there isn't compatibility between the puff and the cosmetic, the cosmetic maker can reduce the judge time. In this study, we focused on oil quantity in powder foundation. This is a large factor of its composition and influences the sense of use. First, we performed the availability of combustion test. We would use the test for identification of oil ratio in the powder foundation. We measured the mass of the puffs payoff from the foundation and coating test to skin when we use different oil ratios. We used the puffs which had higher marks in the payoff and coating test for sensory evaluation by experts of cosmetic evaluation. We found a difference trend in the samples that had high marks of evaluation. When we calculated the principle component analysis of sensory evaluation, we found the difference trend in the rank of principle result. In the case of low oil quantity foundation, the first principle was the puff's good impression and adhesion impression of the foundation. However, in the case of high oil quantity foundation, the first principle was good retention of puff and foundation's coating ability. Next, we calculated the correlation coefficient between sensory evaluation result and physical data. When we calculated low oil quantity foundation, we found significant correlation coefficient between foam cells and sensory evaluation results. When we calculated high oil quantity foundation, we found significant correlation coefficient between hardness or compressive load and sensory evaluation results. In conclusion, we found the trend-like relationship between the cosmetic puff and the powder foundation's oil quantity.
