Using Stabilized Mixed Enzyme in No-Rinse Fabric Stain Remover

Question

I would like to know whether Stabilized Mixed Enzyme can be used in a no-rinse fabric stain remover formula.

If it can be used, what percentage is recommended? Or if it cannot be used, what other options would you recommend?

Answer 1

For a true no-rinse / leave-on fabric stain remover, we do not recommend using Stabilized Mixed Enzyme as the main active. Enzymes may remain on the fabric after drying, may contact the user’s skin, and can continue acting when the fabric becomes moist again. The catalog usage rate for Stabilized Mixed Enzyme (for laundry, Liquid) is intended for concentrated laundry/detergent formulas, not as a validated leave-on fabric spray.

If the product is changed to a pre-wash stain treatment that will be washed/rinsed afterward, it can be used. Suggested starting trial level:

Use case	Recommendation
Pre-wash / spot treatment before washing	Start at 0.6-1.0%
Adjustment after stain-panel testing	Increase only if needed, within catalog range 0.6-3.5%
True no-rinse / leave-on fabric spray	Not recommended as first choice

Important formulation points for enzyme formulas:

Keep finished pH around 7-11 according to the product data.
Add enzyme in the last step / cool-down step; do not heat directly.
Avoid assuming enzyme alone will dissolve and remove all stains. Enzymes need contact time, moisture, suitable pH, and normally a wash/rinse step to carry loosened soil away.
Test carefully on colored, delicate, wool/silk/leather, and repeated-use fabrics.

If targeting specific stains in a wash-off/pre-wash product, single enzymes may be more suitable:

Stain target	Suggested enzyme option	Catalog trial range
Protein stains such as blood, milk, sweat/body soil	Stabilized Protease Enzyme (remove protein stains, liquid)	0.1-1.0%
Oil/grease stains	Stabilized Lipase Enzyme (Remove Fat Stains, Liquid)	0.1-0.4%
Embedded soil / fabric feel support	Stabilized Cellulase Enzyme (Soften Fabric, Liquid)	0.1-0.4%

For a true no-rinse fabric product, consider a non-enzyme cleaning aid/surfactant direction instead, such as Sodium Xylene Sulfonate (Hydrotrope Surfactant) as a detergency/hydrotrope support. The exact percentage should be determined by stain removal and residue testing because no full formula was provided. Please test dried residue, tackiness, odor after drying, color bleeding, fabric strength, and skin-contact transfer before finalizing the formula.