We all love a good deal — and with so many parents reselling baby and mom essentials online, it’s easy to score great preloved finds. Getting secondhand items like nursery décor, baby cots, monitors, or toys in good condition can be a smart way to save.
But not everything should be reused. Some items, especially those related to safety, feeding, or hygiene, can lose their effectiveness or cleanliness over time. And when it comes to your baby’s wellbeing (and yours!), it’s always better to stay on the safe side.
So, before you click “buy,” here’s a quick guide to the baby and mom items you should never buy secondhand — plus some trusted new alternatives you can find on Babydash.
Why you shouldn’t buy used:
Car seats have expiry dates — usually between 5 to 10 years from the manufacturing date. Over time, materials can weaken, safety standards may change, and you’ll never really know if a secondhand car seat has been in an accident. Even small, unseen damage can make a big difference when it comes to protecting your baby.
If you’re getting a new one, here are some great options that are safe, stylish, and affordable:

Crolla: Alpha R129 Car Seat (Gold)

Osann: Huddle 2 I-Size Car Seat (Nero)
Why you shouldn’t buy used:
Breast pumps, especially open-system types, can trap milk residue inside the tubing or motor. This can lead to bacteria and mold growth — even if it looks clean on the outside. Using a secondhand pump also risks cross-contamination between users, which isn’t hygienic for mom or baby.
Here are some great options for breast pumps you should definitely check out:

Boboduck: Gianna Wearable Electric Breastpump Wireless Handsfree

Spectra Dual Compact Double Breastpumps
3. Mattresses
Why to avoid used ones:
A baby’s mattress might look clean, but you never really know what’s inside. Over time, mattresses can collect dust mites, bacteria, and even mold — things that can affect your baby’s health. Older mattresses may also lose their firmness or shape, increasing the risk of suffocation for infants. For your baby’s comfort and safety, it’s always best to get a brand-new mattress.
Other Baby Items Not Recommended to Buy Secondhand
While the three above are the biggest no-gos, here are a few more items parents should also avoid buying used:
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Pacifiers and Teethers – These go directly into your baby’s mouth and can harbor bacteria or wear down easily, posing a choking hazard.
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Baby Bottles and Nipples – Plastic and silicone materials degrade over time, making it hard to ensure they’re 100% safe and hygienic.
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Breast Milk Storage Bags or Containers – Always buy new ones to avoid contamination and ensure they’re properly sterilized.
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Crib or Cot with Missing Parts – If it’s incomplete or recalled, it may not meet current safety standards.
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Baby Helmets or Safety Gear – Once used or dropped, they might not provide the same level of protection anymore.
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Soft Toys – They can collect dust, allergens, or even pests if stored for too long.
Shopping secondhand can be a great way to save — but when it comes to products that directly affect your baby’s safety, comfort, or health, new is always best.