Yes, it can be washed, but act quickly.
Once all-water polyurethane fully cures, it becomes virtually insoluble and can only be removed mechanically.
Best window: Uncured (within 30 minutes)
Use any of the following methods:
A. Dishwashing liquid + warm water + brush (safest) Uncured all-water PU is highly viscous but can be softened by surfactants + hot water.
Steps:
- Apply dishwashing liquid to the stain
- Moisten with 40–50°C warm water
- Gently brush with toothbrush/soft brush
- Rinse and wash as normal
Most workwear-friendly option.
B. Alcohol (75% or 95%) — swells polyurethane surface Not-fully-cured water-based PU is sensitive to alcohols.
Suitable for: Alcohol-resistant fabrics (cotton, polyester, workwear materials)
C. Acetone (powerful — use with caution) Significantly swells uncured PU, but:
- May cause color bleeding on dyed fabrics
- Avoid direct use on everyday clothing
- Recommended for construction workwear only
Semi-cured (1–3 hours) treatment
Once all-water PU semi-cures, it becomes tough but hasn’t fully film-formed. You can try:
- Alcohol compress for 10 minutes, then attempt brushing
- After alcohol penetrates the film layer, the surface will whiten and soften — brushing becomes more effective
