FANCL HTC Deep Charge Collagen Powder 30 Sachets | JapanFANCL HTC Deep Charge Collagen Powder Japanese Collagen Supplement 30 Sachets Japan's #1 collagen supplement brand delivers its most scientifically advanced formula. HTC Collagen (Hydroxyproline containing Tripeptide Collagen) is FANCL's patented, fish derived collagen peptide a tripeptide unit containing Hydroxyproline, smaller than standard hydrolyzed collagen, proven to reach the dermis and stimulate fibroblast activity more effectively than