Skin Health — Efficacy of a Nutritional Supplement on Skin Health in Generally Healthy Adults
Citation(s)
Bizot, V , E. Cestone, A. Michelotti and V. Nobile. Improving skin hydration and age-related symptoms by oral administration of wheat glucosylceramides and digalactosyl diglycerides: a human clinical study. Cosmetics 4(37): 2017
Juturu V, Bowman JP, Deshpande J Overall skin tone and skin-lightening-improving effects with oral supplementation of lutein and zeaxanthin isomers: a double-blind, placebo-controlled clinical trial. Clin Cosmet Investig Dermatol. 2016 Oct 7;9:325-332. eCollection 2016.
Morganti P, Fabrizi G, Bruno C Protective effects of oral antioxidants on skin and eye function. Skinmed. 2004 Nov-Dec;3(6):310-6.
Palombo P, Fabrizi G, Ruocco V, Ruocco E, Fluhr J, Roberts R, Morganti P Beneficial long-term effects of combined oral/topical antioxidant treatment with the carotenoids lutein and zeaxanthin on human skin: a double-blind, placebo-controlled study. Skin Pharmacol Physiol. 2007;20(4):199-210. Epub 2007 Apr 19.
Proksch E, Schunck M, Zague V, Segger D, Degwert J, Oesser S Oral intake of specific bioactive collagen peptides reduces skin wrinkles and increases dermal matrix synthesis. Skin Pharmacol Physiol. 2014;27(3):113-9. doi: 10.1159/000355523. Epub 2013 Dec 24.
Proksch E, Segger D, Degwert J, Schunck M, Zague V, Oesser S Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Skin Pharmacol Physiol. 2014;27(1):47-55. doi: 10.1159/000351376. Epub 2013 Aug 14.
A Single-center, Placebo Controlled Study to Investigate the Efficacy of a Nutritional Supplement on Skin Health in Generally Healthy Adults
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
