Serum Instant Anti-Redness Efficacy Clinical Study

Inclusion Criteria: 1. Chinese women aged from 20-40 years old. 2. Self-declared mild sensitive skin. 3. Regular users of cleanser, Serum, moisturizer and sunscreen product. 4. Self-declare with skin concerns of redness and easy to flushing. 5. Willing to be exposed to infrared light on the facial skin to induce facial redness (can tolerate heat sensation on the face). 6. Clinical grading of skin redness(visual) ≥ 4 after infrared light\[2\] induction (5-10 mins) by dermatologist. 7. No disagreement of dermatologist because of other reasons that exclude the participation of the subject. 8. In general good health at the time of the study. 9. Willing and able to participate as evidenced by signing of informed consent and photo release form. 10. Must be willing to comply with all study protocol requirements (pay attention to: only use the provided product during the study, not take topical or oral treatment like retinol, hormone, anti-oxidant health-care products which may impact the efficacy of study). Exclusion Criteria: 1. Allergic to infrared light 2. Pregnant or breast-feeding woman or woman planning pregnancy during the study. 3. Subject deprived of rights by a court or administrative order. 4. Major subject to a guardianship order. 5. Subject residing in a health or social care establishment. 6. Patient in an emergency setting. 7. Subject with a skin disease in the test areas (particularly e.g, acne, rosacea, eczema). 8. Subjects with history of atopy, allergic reactions, irritation or intense discomfort feelings to topical-use products, medication, cosmetic or personal care products or ingredients. 9. Subject presenting a stable or progressive serious disease (per investigator's assessment). 10. Immuno-compromised subject. 11. Subject presenting excessive exposure to sunlight or UV radiation (investigator's assessment). 12. Subjects regularly practicing aquatic or nautical sports. 13. Subjects regularly attending a sauna. 14. Subject with cardiovascular or circulatory history. 15. Subject with a history of skin cancer or malignant melanoma. 16. Intake of antihistamines, antibiotics, corticosteroids, non-steroidal anti-inflammatories or immune-suppressants in the last 6 months before study