Dry and Damaged Skin
Conditions
Brief summary
Aim of the study was to evaluate by non-invasive instrumental evaluations tolerance and hydrating activity of a face topic product, to be applied twice a day, morning and evening, for an uninterrupted period of 8 weeks, by volunteers of both sexes, aged 45-60, who meet the inclusion and exclusion criteria required by the study procedure . It was also aim of this study to evaluate the hydrating activity of a single product application on the skin damaged by repeated stripping corneum (short term evaluation versus untreated control area).
Interventions
Short term evaluation to investigate the hydrating activity of a single application of the study product on the forearms (volar surface) after repeated stripping procedure,measured immediately after stripping execution (T0i), 1,8 and 24 hour/s after product application (T1h, T8h and T24h).
Long term evaluation to investigate the hydrating activity of the repeated application of the study product on the face (twice a day, for an uninterrupted period of 8 weeks), measured at basal visit (T0) and after 4 and 8 week-treatment (T4, T8)
Sponsors
Study design
Eligibility
Inclusion criteria
* both sexes, * age 45-60 years, * caucasian subjects, * agreeing to present at each study visit without make-up, * accepting to follow the instructions received by the investigator, * accepting to not change their habits regarding food, physical activity, face cleansing and make- up use, * agreeing not to apply or take any product or use face massages or other means known to improve skin wrinkle and skin qualities during the entire duration of the study, * accepting not to expose their face to strong UV irradiation (UV session, or sun bathes), during the entire duration of the study, * no participation in a similar study currently or during the previous 3 months * accepting to sign the Informed consent form.
Exclusion criteria
* Pregnancy (only for female subjects), * lactation (only for female subjects), * sensitivity to the test product or its ingredients (to be assessed by the investigator during the baseline visit), * subjects whose insufficient adhesion to the study protocol is foreseeable. * presence of cutaneous disease on the tested area as lesions, scars, malformations, * recurrent facial/labial herpes, * clinical and significant skin condition on the test area (e.g. active eczema, dermatitis, psoriasis etc.). * endocrine disease, * hepatic disorder, * renal disorder, * cardiac disorder, * pulmonary disease, * cancer, * neurological or psychological disease, * inflammatory/immunosuppressive disease, * drug allergy. * anti-inflammatory drugs, anti-histaminic, topic (application on the face) and systemic corticosteroids, narcotic, antidepressant, immunosuppressive drugs (with the except of hormonal treatment starting more than 1 year ago), * using of drugs or dietary supplements able to influence the test results in the investigator opinion.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change of superficial skin hydration after a single product application | Immediately after stripping (T0i), 1 hour after product application (T1h), 8 hours after product application (T8h), 24 hours after product application (T24h) | Variation of skin electrical capacitance value measured with Corneometer CM825 (Courage - Khazaka, Köln, Germany) after a single product application on the skin area damaged by corneum stripping |
| Change of transepidermal water loss (TEWL) after a single product application | Immediately after stripping (T0i), 1 hour after product application (T1h), 8 hours after product application (T8h), 24 hours after product application (T24h) | Variation of transepidermal water loss value measured with Tewameter® TM300 (MPA 5 Courage-Khazaka, Germany) after a single product application on the skin area damaged by corneum stripping |
| Change of superficial skin hydration after repeated product application | Baseline (T0), 4 weeks (T4), 8 weeks (T8) | Variation of skin electrical capacitance value measured with Corneometer CM825 (Courage - Khazaka, Köln, Germany) after repeated product application on the face |
| Change of deep skin hydration after repeated product application | Baseline (T0), 4 weeks (T4), 8 weeks (T8) | Variation of tissue dielectric constant value of deep skin layers measured with MoistureMeterD (Delfin Technologies, Kuopio - Finland) after repeated product application on the face |
Countries
Italy