In 1991, enzymatic treatment was introduced into the lyocell process as a way to stop the filibratation on the yarn. Fibrillation leads to fuzz/pilling on the end fabric. The process is also called biopoliching. Biopolishing also gives a softer and more peach-skin feel to the end fabric. Biopolishing does provide a small loss in tensile strength but overall, it’s negligible as the final fiber has a higher tensile strength compared to other fibers like cotton. Enzymatic treatment is used in food production and is considered safe.