575 ANTI-ACNE PERFORMANCE OF COSMETIC SKINCARE PRODUCTS Figure 6. Product character assessment. Figure 5. Self-assessment of subjects. (A) Greasiness assessment, (B) pores, (C) moist degree, and (D) skin comfort. “*” indicates that the comparison between data at different time points and base values has statistical significance (p 0.05).

576 JOURNAL OF COSMETIC SCIENCE TREATMENT EFFECT As shown in Figure 7, more than 80% of the subjects treated for 2 weeks recognize that the product has an anti-oil effect and reduced noninflammatory skin lesions. More than 90% of the subjects treated for 2 weeks felt that the skin inflammation lesions were reduced. Most subjects showed great interests in using the product due to its pleasant, satisfactory, and effective performance. After 4 weeks of usage, more than 90% of the subjects still consider the product to have an anti-oil effect, reduced skin inflammatory lesions, and reduced noninflammatory lesions and, as a result, are willing to continue to use it. Detailed parameters for evaluating the treatment effects are seen in Table III. COMFORT AND TOLERANCE EVALUATION As shown in Figure 8, more than 80% of the subjects treated for 2 weeks recognized that the product does not cause skin stickiness, while more than 90% of the subjects felt comfortable without any tingling and greasiness feeling. All subjects stated that the product does not cause pimples, swelling, or tension. After 4 weeks of use, more than 80% of the subjects stated that the product does not cause skin stickiness, while more than 90% of subjects Table II Parameters for Immediate Trait Evaluation Parameters 1 2 3 4 The product is not greasy Totally disagree Sort of disagree Agree a little Totally agree The product is not sticky Totally disagree Sort of disagree Agree a little Totally agree The product is very comfortable Totally disagree Sort of disagree Agree a little Totally agree The product is easy to apply Totally disagree Sort of disagree Agree a little Totally agree The product is easy to absorb Totally disagree Sort of disagree Agree a little Totally agree Figure 7. Evaluation of therapeutic effect.