Enzyme wash — also called bio-polishing — is a finishing process that uses cellulase enzymes to selectively remove loose fibers and surface fuzz from cotton fabric. The enzymes break down the protruding fiber ends, leaving a smoother, cleaner surface with less tendency to pill over time.
The result is immediately visible: colors look brighter and more saturated because there's less surface fiber scattering light. The hand feel becomes crisper. And critically, the treated fabric pills significantly less after washing — which directly affects the longevity of the garment's appearance.
Enzyme wash is particularly valuable for darker colors where surface fuzz creates a greyish haze. A navy jersey treated with enzyme wash looks noticeably deeper and cleaner than untreated fabric.
How cellulase enzymes work
Cellulase is an enzyme that breaks down cellulose — the structural component of cotton fibers. In controlled concentrations and at specific pH levels, cellulase attacks only the protruding ends of fibers rather than the main fiber body. The loose ends are degraded and removed in the wash, leaving the core fiber structure intact.
The process is carefully controlled by time, temperature, and enzyme concentration. Over-processing can weaken the fabric — the enzyme will eventually attack the main fiber body if exposure is too long. Your fabric supplier manages this process; you specify it as a finish requirement.
Production specs for your tech pack
| Spec | Value | Notes |
|---|---|---|
| Finish type | Enzyme wash / Bio-polishing | Cellulase enzyme treatment |
| Application | After dyeing | Applied to dyed fabric before cutting |
| Weight loss | 3–5% | Expected fabric weight reduction from process |
| Pilling resistance | Min. Grade 3–4 | ISO 12945 Martindale test |
| Color effect | Slight brightening | Account for this when approving lab dip |
Weight loss note: Enzyme wash removes fiber mass — the fabric will be 3–5% lighter after treatment. If you're specifying a target GSM (e.g. 180 g/m²), clarify whether this is the pre-wash or post-wash weight. Most specs refer to post-wash weight.