Oxygen Bleach Powder (Oxi-Boost) vs. Laundry Scent Booster Beads (Downy Unstopables Type)

Materials

• Sodium percarbonate
• Sodium carbonate

Common claims

• Color-safe bleach alternative
• Brightens whites and colors
• Fragrance-free

Concerns / watch-outs

• Should be kept dry; reacts with moisture and releases oxygen prematurely
• Irritating if inhaled as dry powder; use in ventilated areas

Notes

One of the best chlorine-bleach alternatives. Sodium percarbonate breaks down into oxygen and washing soda — both non-persistent in the environment.

Cleaner alternatives

• powder laundry detergent
• baking soda scrub

Materials

• Fragrance
• PVA or PEG binding agent
• Dyes

Common claims

• Up to 12-week freshness
• In-wash scent booster
• Vibrant colors

Concerns / watch-outs

• Purpose-built to maximize fragrance deposition — among the highest synthetic fragrance load of any laundry product
• Fragrance chemicals remain on fabric and are inhaled and absorbed throughout the day
• EWG rates this product category among the most concerning in household care

Notes

The only reason these exist is to extend fragrance — which is exactly what makes them a concern. There is no functional benefit beyond scent. If fragrance is desired, a drop of essential oil on a wool dryer ball is a safer alternative.

Cleaner alternatives

• wool dryer balls
• powder laundry detergent