Adult
Conditions
Interventions
Apply test cosmetics (serum) to the designated medial part of the upper arm during 7 days
Apply placebo cosmetics (serum) to the designated medial part of the upper arm during 7 days
Sponsors
SOUKEN
Yamada Bee Company, Inc.
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1) Japanese men and women between the ages of 20 and 59 at the time of consent 2) Those whose skin is mainly reddish when exposed to the sun and who do not darken afterwards or are less likely to darken than other people around them. 3) Those whose skin color is fair or normal. 4) Those who can agree to have sunburn scars (1cm diameter circle x 6 pieces per row x 1 row on the left upper arm and 3 pieces per row on the right upper arm, maximum of 9 circles) on the inner side of the right and left upper arms for about 6 months (depending on the skin type).
Exclusion criteria
Exclusion criteria: 1) Who are participating in other clinical trials 2) Persons with factors in the medial part of the upper arm of both arms that may affect the results of the test (ex. atopic dermatitis and urticaria, inflammation, eczema, trauma, acne, pimples, warts, spots, etc., or their traces). 3) Those who cannot avoid sunburn due to prolonged outdoor work or sports from screening to the end of the test. 4) Those who plan to travel abroad, go swimming, etc. from screening to the end of the test. 5) Those who are undergoing special facial care (e.g., facial appliances, esthetics, peeling, laser treatment, etc.) 6) Those who take medicines, quasi-drugs, or supplements with efficacy for melasma or hyperpigmentation caused by sunburn at least 3 times a week (such as HYTHIOL, HICEE WHITE, TRANSINO Cystina, Alphe, Vitamin C, L-Cysteine) 7) Those who are pregnant, potentially pregnant or lactating 8) Those who are visiting hospital for treatment of an illness or receiving medication 9) Persons who regularly take medications (anti-histamines, anti-inflammatory drugs, painkillers) 10) Persons who may exhibit symptoms of skin allergies or skin hypersensitivity 11) Those who are currently undergoing dermatological treatment 12) Persons who may develop seasonal allergic symptoms such as hay fever during the study period and may use pharmaceuticals 13) Those who develop blisters due to sunburn 14) Those with extremely thin upper arms
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| erythema index | — |
Secondary
| Measure | Time frame |
|---|---|
| skin color Digital Photography (melanin index) | — |
Countries
Japan
Contacts
Public ContactAkio Ohkuma
Research Center for Immunological Analysis, Inc. Director
Outcome results
None listed