Assertion: collagen's use | /r/CapableOf | decrease apparent roughness of skin
Facets:
Source sentences:
text: The use of vitamin C (3-10%) in topical applications for at least 12 weeks has been shown to decrease wrinkling (21, 23, 25, 27), reduce protein fiber damage (25), decrease apparent roughness of skin (21), and increase production of collagen (26, 27).