DearDerm Marin Collagen Essence Toner with Witch Hazel 250 ml / 8.45 fl.oz SKIN ELASTICITY/ MOISTURIZING / REGENERATION Marine collagen is collagen sourced from marine life, usually fish scales or skin, rather than a bovine source. It is often found in the form of collagen peptides. Collagen peptides, also known as hydrolyzed collagen, is a form of collagen processed to be soluble in cold water and easily digestible. Witch Hazel is known to be an amazing skin care astringent.