That sounds like you’re talking about a DIY natural whitening method for laundry. There are several natural alternatives to chlorine bleach that can help keep clothes bright and fresh. Here are some of the most effective ones:

Natural “Bleach” Options for Laundry

Baking Soda

Add 1 tablespoon to ½ cup directly into the washing machine drum.

Helps whiten whites, neutralize odors, and soften clothes.

Hydrogen Peroxide (3%)

Add 1 tablespoon to ½ cup in the bleach dispenser.

Acts as a natural, non-chlorine bleaching agent that lifts stains and brightens whites.

Lemon Juice

Add 1–2 tablespoons to the wash cycle.

Works as a natural whitener and freshener. Best when used with hot water.

White Vinegar

Add 1–2 tablespoons to the rinse cycle.

Helps dissolve detergent buildup, brightens clothes, and softens fabric naturally.

Bonus Tip

For extra whitening power, you can combine baking soda + hydrogen peroxide + a splash of lemon juice in the wash. Sun-drying afterwards also naturally boosts whitening.