Best Seller | Kocostar T1 Collagen Cream T1 Collagen Cream offers professional facial care in the comfort of your own home. Thanks to its patented technology, the cream-to-film formula guarantees maximum collagen delivery deep into the skin, effectively restoring youthful radiance. ... more Kocostar T1 Collagen Cream T1 Collagen Cream offers professional facial care in the comfort of your own home. Thanks to its patented technology, the cream-to-film formula guarantees maximum collagen delivery deep into the skin, effectively restoring youthful radiance. Verishop | | $39.00 go to store |