Repair essence and preparation method thereof
A technology of essence and skin conditioning agent, applied in the field of repairing essence and its preparation, can solve the problems of facial skin care product irritation due to seasonal changes, sensitive skin environmental factors, weak skin barrier function, etc. Simple and suitable for promotion and application
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[0039] 1. Tested substance: samples of Examples 1-3 of the present invention
[0040] 2. Negative control: blank control
[0041] 3. Subjects: 30 people in total, 20 males and 10 females, aged 30-55 years old.
[0042] 4. Spot test method: Select a qualified spot test device, apply about 0.03g of the test substance in the spot test device with a closed patch test method, and apply the special tape for external use on the back of the subject, and remove the test substance after 24 hours. Observe the skin reaction of the test substance at 0.5, 24, and 48 hours after removal, and record the results according to the skin reaction grading standard in the "Safety and Technical Specifications for Cosmetics" (2015 edition).
[0043] 5. The test results are shown in Table 3.
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