How to Clean Period Underwear for Heavy Days

Quick answer

Rinse cold, machine wash gentle, and air dry to keep the absorbent core and leak barriers working. Avoid fabric softener and heat drying.

How to wash period underwear for heavy days

1. Rinse with cold water right after use: Run the underwear under cold tap water until the water runs mostly clear. This removes excess blood before it dries and sets into the fabric. Common mistake: using hot water can set stains and damage the absorbent core.
2. Machine wash on a gentle cycle: Place the underwear in a mesh laundry bag (optional but helpful) and wash on a cold, gentle cycle with a mild, fragrance-free detergent. Do not use fabric softener or bleach—they coat the fibers and reduce absorbency. Checkpoint: skip the pre-soak with stain removers containing enzymes; they can break down the leak-proof layer.
3. Air dry completely: Hang the underwear flat or on a drying rack. Do not put it in the dryer or use direct heat, as high temperatures can melt the waterproof membrane and shrink the elastic. Common mistake: wringing out the underwear twists the core and may cause permanent damage to the absorbent panel.

Product facts

• Proof Leak and Period Proof Hipster - Heavy: The Proof Hipster holds up to 5 regular tampons’ worth (10 tsp) of liquid with its ultra-thin, super-absorbent core and Leak-Loc™ technology. This high absorbency means the underwear needs thorough rinsing and gentle washing to keep the core from clogging and the leak barriers intact.