What Is Oxygen Bleach and How Is It Different From Chlorine Bleach?
The word "bleach" describes more than one kind of laundry chemistry. Oxygen-based bleach and chlorine bleach can both help with stains or whitening, but they are not interchangeable.
Chlorine bleach
Household chlorine laundry bleach is generally based on sodium hypochlorite. It can whiten and, when a product is labeled for the purpose and used exactly as directed, sanitize or disinfect appropriate laundry. Even a white garment is not automatically chlorine-bleach safe. Wool, silk, mohair, leather, spandex, and some dyes or finishes can be damaged.
Oxygen or non-chlorine bleach
Oxygen-based laundry bleaches commonly use peroxide-releasing chemistry and are often marketed as color-safe or non-chlorine bleach. They can help remove stains and brighten compatible washable fabrics, but "color-safe" does not mean "safe for every textile."
Which should you use?
Ask: What does the garment care label permit? What does the bleach product say it is designed to do? Are you trying to remove a stain, brighten fabric, or achieve a labeled sanitizing or disinfecting result?
Never mix laundry chemicals casually
Never mix chlorine bleach with ammonia, vinegar, acids, or other cleaners. Dangerous gases can form.
More is not better
Increasing the amount or soaking longer than the label directs can damage fabric and does not guarantee a better result.
Neither type of bleach replaces reading the care label.