Table 3.
The questionnaire about cosmetics-related knowledge before and after attending the course.
| Questions | Completed | Uncompleted | p-Value | ||
|---|---|---|---|---|---|
| Pre-course | Post-course | Pre-course | Post-course | ||
| Can you distinguish between different skin types? | |||||
| 1. Absolutely not | 16 | 1 | 35 | 12 | 0.021 |
| 2. Partially know how to distinguish, but sometimes judge incorrectly | 134 | 35 | 175 | 114 | |
| 3. Partially know how to distinguish, and haven't misjudged so far | 113 | 224 | 120 | 196 | |
| 4. Have enough knowledge and understanding and can make correct judgments | 31 | 34 | 21 | 29 | |
| To which extent do you know about the types and functions of cosmetics used in daily life? | |||||
| 1. Absolutely no idea | 33 | 1 | 46 | 18 | <0.001 |
| 2. Roughly know the types but have no idea of their specific functions and risks | 178 | 26 | 183 | 118 | |
| 3. Exactly know the types and roughly know specific functions and risks, but unable to use them in practice. | 62 | 180 | 89 | 157 | |
| 4. Exactly know the types and specific functions, and able to use them in practice. | 21 | 87 | 33 | 58 | |
| To which extent do you know about cosmetics ingredients? | |||||
| 1. Absolutely no idea | 96 | 6 | 124 | 27 | <0.001 |
| 2. Roughly know the types but have no idea of specific functions and risks | 147 | 57 | 170 | 161 | |
| 3. Exactly know the types and roughly know specific functions and risks | 40 | 181 | 50 | 135 | |
| 4. Exactly know the types and specific functions | 11 | 50 | 7 | 28 | |
| Can you choose the right products for yourself? | |||||
| 1. Absolutely not | 47 | 2 | 71 | 27 | <0.001 |
| 2. Know which type of products suit me, but unable to choose the specific product | 145 | 58 | 191 | 147 | |
| 3. Can pick up several candidates but cannot find out the best option | 84 | 170 | 72 | 139 | |
| 4. Can choose the products that suit me most | 18 | 64 | 17 | 38 | |
| Can you tell the truth or falsity of cosmetics advertisements? | |||||
| 1. Absolutely not | 51 | 6 | 56 | 21 | <0.001 |
| 2. Roughly know the definitions of what the advertisements advocate but have no idea of their truth or falsity | 129 | 37 | 166 | 107 | |
| 3. Roughly know the mechanisms of what the advertisements advocate, but cannot determine whether the benefits of the product outweigh the price | 89 | 183 | 112 | 172 | |
| 4. Exactly know the mechanisms and the actual value of what the advertisements advocate | 25 | 68 | 17 | 51 | |
| Can you tell the truth or falsity of so called “cosmetics tips” in daily life? | |||||
| 1. Absolutely not | 46 | 5 | 71 | 26 | <0.001 |
| 2. Roughly know what the logic behind those tips is but I have no idea of their truth or falsity | 141 | 56 | 166 | 133 | |
| 3. Can roughly judge the truth or falsity though I don't know the mechanisms well | 88 | 164 | 97 | 157 | |
| 4. Exactly know the mechanisms work and can clearly judge the truth or falsity of such tips | 19 | 69 | 17 | 35 | |
| To which extent have you changed your skin care practices after taking this course? | |||||
| 1. Almost no changes (<10%) | 15 | 57 | <0.001 | ||
| 2. Mild changes (10–30%) | 104 | 183 | |||
| 3. Moderate changes (30–50%) | 135 | 94 | |||
| 4. Most attitudes and habits have been changed (>50%) | 40 | 17 | |||
| To which extent has your skin condition improved after taking this course? | |||||
| 1. Getting worse | 3 | 4 | <0.001 | ||
| 2. Almost no changes | 112 | 201 | |||
| 3. Mild changes (<20%), such as getting smoother, white, soft or flexible | 156 | 131 | |||
| 4. Obvious positive changes (>20%) | 23 | 15 | |||
| To which extent do you want to recommend our course to others? | |||||
| 1. Never recommend it to anyone | 3 | 11 | 0.001 | ||
| 2. It depends | 63 | 103 | |||
| 3. Might recommend it | 91 | 109 | |||
| 4. I will recommend it to everyone around me | 137 | 128 | |||