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A friend for young children or a new piece for a collection, hard plastic dolls are popular with children and adults alike. You can find old hard plastic dolls at yard sales and flea markets for relatively cheaply. These dolls can look like an unsightly mess, with a nose-wrinkling odor. However, you can clean these diamonds in the rough with a few inexpensive household items that will remove the odor and restore the look of the once-pristine dolls.
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Remove any clothing or accessories on the hard plastic doll. Pull the doll's hair back and tie it in a ponytail. This will help keep the hair out of the way during the odor removal process.
Fill a small container with undiluted white vinegar. Dampen a lint-free cloth in the vinegar.
Start at the top of the doll and wipe the hard plastic with the damp cloth while moving downward. Continue in this manner until you have wiped all the hard plastic with the vinegar-saturated cloth.
Lay the doll on a towel and let dry for several hours. As the vinegar dries, it will remove the odor. Continue with the remaining steps if the odor is still present.
Fill a plastic bag big enough for the doll to fit in with baking soda. Place the doll inside the baking soda-filled bag and let sit undisturbed for several days. The baking soda will help eliminate the odor from the hard plastic doll.
Remove the doll from the bag and wipe any baking soda off the plastic with a cloth dampened in cool water. Wipe dry with a towel.
Wash the hard plastic doll's hair with a gentle shampoo to remove odors from the hair. Rinse with cool water and remove the excess liquid from the hair with a towel. Let the hair air dry for several hours.
Commercial all-purpose cleaners can help remove odor from hard plastic dolls.