Pure District Stripp Collagen Pure Oral Skin Care 30 pcsPure District Stripp Collagen Pure Oral Skin Care is a dietary supplement with collagen, elastin and hyaluronic acid the building blocks of supple and fresh skin. The revolutionary application of collagen through the oral mucosa increases its bioavailability . A clinical study comparing a group of people who used collagen in the usual form of tablets or a drink with a group of people who used mucosal collagen unequivocally proved that collagen for