Marseille soap, renowned for its gentle yet effective cleaning properties, can tackle even the most stubborn stains, from tomato sauce and coffee to grease. Here’s how to use it for whitening:

Directly rub the stain with a block of dry Marseille soap, generously covering the area.

Allow the soap to sit on the fabric for about an hour.

Lather the area with water and scrub again, if necessary, using a soft-bristled brush for tougher stains.

Wash the garment in your machine without rinsing off the Marseille soap beforehand. This allows the soap’s natural cleaning power to work during the wash cycle.

In Conclusion

Yellowing and graying of white fabrics are common issues that can often be addressed with simple, natural solutions. By incorporating soda crystals, hydrogen peroxide, or Marseille soap into your laundry care, you can achieve brighter, fresher-looking whites without resorting to harsh chemicals. Remember, prompt treatment of stains and regular maintenance of your washing machine are also key to keeping your whites looking their best.