Side by side
Oxygen Booster vs Chlorine Bleach
An oxygen booster like sodium percarbonate and chlorine bleach are different chemicals. Sodium percarbonate is a dry powder that releases oxygen in water. Household chlorine bleach is a liquid solution of sodium hypochlorite. Pronounce uses sodium percarbonate, and none of our products contain chlorine bleach.
Updated October 2026
| Compare | Oxygen booster | Chlorine bleach |
|---|---|---|
| Active ingredient | Sodium percarbonate | Sodium hypochlorite |
| Form | Dry white granules | Liquid solution |
| Contains chlorine | No | Yes |
| What it releases in water | Hydrogen peroxide, which breaks down into water and oxygen | Hypochlorous acid and hypochlorite |
| Smell | No distinct smell | The familiar chlorine smell |
| In Pronounce | Dishwasher Detergent and the Enzyme Oxygen Laundry Booster | Not used |
Both are often called bleach, which is where the confusion comes from. Oxygen boosters are built on sodium percarbonate: washing soda and hydrogen peroxide bonded together into a dry powder. When it dissolves, it releases hydrogen peroxide, which breaks down into water and oxygen.
Chlorine bleach is sodium hypochlorite dissolved in water. It's a different chemistry with a different smell, and it's sold as a liquid. Pronounce uses sodium percarbonate in Dishwasher Detergent and the Enzyme Oxygen Laundry Booster, and none of our products contain chlorine bleach.
Questions
Is an oxygen booster the same as bleach?
Not chlorine bleach. An oxygen booster like sodium percarbonate releases hydrogen peroxide in water. Chlorine bleach is sodium hypochlorite.
Does Pronounce use chlorine bleach?
No. None of our products contain chlorine bleach. Dishwasher Detergent and the Enzyme Oxygen Laundry Booster use sodium percarbonate, an oxygen booster.
What is sodium percarbonate made of?
Sodium carbonate (washing soda) and hydrogen peroxide, combined into dry granules.
