Dry skin
Conditions
Interventions
Ingestion of placebo powder for 8 consecutive weeks
Ingestion of powder containing collagen 5,000mg per a day for 8 consecutive weeks
Sponsors
Total Technological Consultant Co., Ltd.(TTC)
Eligibility
Sex/Gender
Female
Inclusion criteria
Inclusion criteria: 1. Healthy females between the ages of 30 and 59 2. Subjects who feel dry skin in the screening test 3. Lower level of transepidermal water loss
Exclusion criteria
Exclusion criteria: 1. Having dietary supplements, medicines, skin care preparation which include collagen, ceramide, hyaluronan-rich, or have had dietary supplements wchich have high effect on skin more than 3 times a week within the last one month prior to the screening test 2. Treated cosmetic care which affects mesuring site 3. Treated cosmetic care except for measuring sites, or hormonal therapy within the last one month prior to the screening test 4. Got a facial, a wash-rag, lost hair on measuring sites, or plan these actions within the last one month prior to the screening test 6. Planning to get a tan between the last one month prior to the screening test and the completion of the test within the last one month prior to the screening test 6. Washing the body using nylon a towel which provides strong skin irritation except for a soft towel 7. Having the wound or inflammatory disease affecting the measuring skin 8. Developing atopy or asthma, or have the its possibility 9. Feeling to trouble by rough skin around a menstruates 10. Employing on a pre-dawn shift or on night duty more than 2 times in the current stugy term 11. Being in development of diabetes, liver disease, kidney disease, or diseases affecting a secretion of sex hormones, or have its previous history 12. Having the medicines constantly 13. Developed hay fever between December and March in the past 3 years, or being expected to be developed the allergy symptoms on skin 14. Participated in other clinical study or are planned to participate in other clinical study after informed consent for the current study 15. Judged as unsuitable for the study based on the results of clinical and physical examination 16. Planning to become pregnant or lactate 17. Planning to go overseas 18. Took a blood sample or donated blood beyond the limit within the last one year prior to the screening test 19. Judged as unsuitable for the study based on the results of lifestyle questionnaire 20. Judged as unsuitable for the study by physician
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Moisture content of the stratum corneum, transepidermal water loss | — |
Secondary
| Measure | Time frame |
|---|---|
| Skin questionnaire | — |
Countries
Japan
Contacts
Public ContactNAKAGAWA Takashi
Total Technological Consultant Co., Ltd.(TTC) Clinical Research Planning Dept.
Outcome results
None listed