Sensitive skin
Conditions
Interventions
Apply each test product twice a day for 4 weeks. Right side: Test product A Left side: Test product A control
Apply each test product twice a day for 4 weeks. Right side: Test product A control Le
Sponsors
Lion Corporation
Macromill, Inc.
Eligibility
Sex/Gender
Female
Inclusion criteria
Inclusion criteria: (1) Japanese women in their 20s to 40s (2) Individuals who have given their free and voluntary consent to participate in the study (3) Those who feel that they have sensitive skin on their faces. (4) Residents of Tokyo, Saitama, Chiba, and Kanagawa prefectures.
Exclusion criteria
Exclusion criteria: (1) Currently undergoing dermatological treatment for a skin disorder (2) Currently participating or scheduled to participate in a study of skin care products for use on the face. (3) Who have not yet completed at least 2 weeks after the completion of the study of skin care products for use on the face. (4) Persons with chronic inflammatory diseases (5) Those with a current allergic skin disease such as atopic dermatitis (6) Persons with skin diseases or injuries on the skin of the test site that may affect the test (7) Persons who have allergic symptoms or peculiar constitution to drugs (including citric acid) or cosmetics. (8) Have a history of serious skin problems (requiring a visit to a dermatologist) due to the use of cosmetics in the past. (9) Those who have been exposed to significant sunlight (e.g., went to a tanning salon or went swimming) within the past 4 weeks or are scheduled to do so by the end of the examination. (10) Those who have undergone facial peeling, laser or other cosmetic medical treatment on the face, cosmetic procedures on the face at esthetic clinics, spas, etc., or art make-up within one month. (11) Any applicant who has undergone cosmetic medical treatment on the examination site (12) Those who have undergone any special skin care treatment (beauty salon, esthetic salon, etc.) to the test area within the past 4 weeks. (13) Those who smoke excessively (more than one pack of cigarettes per day, including e-cigarettes) and have an extremely irregular diet (14) Those who drink excessively (more than 20g/day of alcohol) for more than 6 days a week. (15) Pregnant, lactating, or planning to become pregnant by the end of the study (16) Those who cannot read, write, or communicate in Japanese (17) Those who work irregular hours on a daily basis, such as night shift work or shift work (18) Those that did not meet certain criteria at screening (19) Other subjects deemed unsuitable at the discretion of the principal investigator.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in skin sensitivity before and after 4 weeks of continuous use of the test product | — |
Secondary
| Measure | Time frame |
|---|---|
| Improvement of skin condition by subjective and objective evaluation before and after 4 weeks of continuous use of the test product | — |
Countries
Japan
Contacts
Public ContactMasayuki Nakagawa
Lion Corporation Beauty Care Research Laboratories
Outcome results
None listed