If you’re referring to the common household tip, the “one ingredient” is often baking soda.
Adding about ½ cup of baking soda to a load of white laundry can help:
- Brighten white fabrics.
- Neutralize odors.
- Boost the effectiveness of your regular laundry detergent.
- Soften the wash water, which can improve cleaning.
Other ingredients that are also commonly recommended for whitening whites include:
- Oxygen bleach (safer for most fabrics than chlorine bleach).
- White vinegar (added to the rinse cycle to help remove detergent residue and soften fabrics, though it doesn’t actually bleach clothes).
- Bluing agent (adds a slight blue tint that makes whites appear brighter).
A few important notes:
- Avoid mixing chlorine bleach with vinegar or ammonia, as this can produce dangerous gases.
- Always check the garment’s care label before using whitening agents, especially on delicate fabrics.
If this was the title of an article or social media post, the ingredient it refers to is most likely baking soda, though some articles instead highlight oxygen bleach or white vinegar.
