Last Updated: April 2026
TL;DR:
- Medical guidance is consistent: remove nipple jewelry before every breastfeeding session — it’s a choking hazard and can interfere with your baby’s latch.
- Hospital-grade PTFE (Teflon) and Bioplast retainers are the two materials piercers recommend for pregnancy — both are metal-free, flexible, and MRI-safe at 14G-16G.
- All 5 retainers below run $6-$15 for multi-packs, but none are built to last more than a few months of daily wear — treat them as disposable maternity jewelry, not permanent pieces.
Congratulations on the pregnancy. Your body is about to change in ways that make metal nipple piercing jewelry — barbells, rings, all of it — uncomfortable or outright impractical, especially once breastfeeding starts. That’s where a flexible plastic nipple ring for pregnancy or retainer comes in. Below, I’m breaking down what a nipple piercing retainer actually is, which materials are safe, and the 5 best-reviewed options you can order right now.
What Is a Nipple Piercing Retainer, and Why Would You Need One During Pregnancy?
A nipple piercing retainer is a flexible, non-metal barbell or ring — usually PTFE or Bioplast — that keeps your fistula (piercing channel) open without the rigidity, weight, or MRI-blocking metal of standard titanium or steel jewelry. It flexes as your breast tissue swells and shifts during pregnancy and nursing.
Retainers show up in three shapes: ball-closure rings, flexible barbells, and straight barbells. The two materials that actually matter here are acrylic/acrylic-blend pieces and true Bioplast (a medical-grade polymer, not the same as generic “flexible plastic”). I’ve reviewed hundreds of body jewelry SKUs over the years, and the honest truth is most “Bioplast” listings on Amazon are actually acrylic or a PVC-acrylic blend — real Bioplast is a licensed, patented material, and few $10 multi-packs are using the genuine thing.
Is It Safe to Wear Nipple Jewelry During Pregnancy and Breastfeeding?
It’s generally safe to keep a flexible, non-metal retainer in during pregnancy, but every major lactation authority says to remove jewelry before each breastfeeding session. The piercing itself rarely affects milk supply, since milk is produced in glandular tissue behind the nipple, not at the piercing site.
According to Cleveland Clinic, nursing with jewelry in place raises the risk of your baby choking on a loose ball or bead, and it can mess with the latch, leading to slurping, gagging, or a baby who won’t stay on the breast. La Leche League recommends taking jewelry out completely for the duration of nursing rather than removing and reinserting it at every feed, since the in-and-out habit raises infection risk if your hands or the jewelry aren’t scrupulously clean.
If you’d rather understand the piercing-and-breastfeeding relationship in more depth before you shop, our guide on whether piercing nipples affects breastfeeding covers the mechanics in detail.
PTFE, Bioplast, and Acrylic — What’s the Real Difference?
Here’s what actually separates these three materials, since sellers use the terms loosely:
- PTFE (Teflon): Medical-grade, flexible, non-porous, and the most common material used in hospital retainers for surgery and MRI scans. It’s inert enough to pass most sensitivity checks, though a few piercers now flag long-term leaching concerns and recommend glass for anything worn past a few months.
- Bioplast: A patented, medical-grade thermoplastic elastomer. Genuine Bioplast is nickel-free, latex-free, and autoclavable. It’s softer and more flexible than PTFE.
- Acrylic: The cheapest and most common material in budget multi-packs. It’s rigid rather than truly flexible, and it can crack or chip with repeated flexing — which is exactly what a pregnant belly or breastfeeding chest puts it through daily.
For a full side-by-side, I’d point you to our breakdown of Bioplast vs. acrylic for piercings — it explains why the material listed on the product page doesn’t always match what’s actually in the package.
When Should You Remove Your Nipple Piercing Before Breastfeeding?
Remove nipple jewelry before every single feed — no exceptions. Most lactation consultants also recommend taking jewelry out for good by your second or third trimester if you’re planning to breastfeed, since a retainer left in during active nursing still poses a choking and latch-interference risk.
The Australian Breastfeeding Association notes that even a well-fitted retainer can loosen with the constant motion of nursing, and a baby’s suck reflex is strong enough to dislodge small parts you wouldn’t expect. If you’ve had the piercing a long time and are wondering whether it’s changed how your piercing heals or feels, this guide on breastfeeding with a healed nipple piercing is worth a read before your due date.
Pros and Cons of Nipple Piercing Retainers
Pros:
- Affordable — most multi-packs run $6-$15 for 6-16 pieces
- Comfortable and lightweight compared to metal barbells
- Metal-free, so they’re MRI- and hospital-safe
- Easy to insert and remove without a piercer
- Come in multiple gauges (usually 14G-16G) and lengths (12mm-19mm)
Cons:
- Not durable — expect a few months of wear, not years
- Small end balls are easy to lose, especially with a newborn in the mix
- “Bioplast” labeling on cheap listings is often inaccurate — you’re frequently getting acrylic
5 Best Nipple Piercing Retainers for Pregnancy in 2026
I picked these five based on review volume, material claims, and how often piercing communities actually recommend them for hospital and MRI use — not just marketing copy.
1. Forbidden Body Jewelry Flexible Acrylic Nipple Ring
This is the one I’d point most first-time buyers toward. It’s biocompatible, lightweight, and metal-free enough to wear through hospital scans and MRIs without a tech asking you to remove it. The 6mm end balls unscrew easily, and the set includes a bonus barbell in white, so you’re not left scrambling if one piece goes missing.
Pros: Solid acrylic that resists chipping, flexible and comfortable, comes with a spare barbell, MRI-safe, easy-to-turn 6mm balls, doubles as a tongue barbell.
Cons: The end balls run slightly larger than most nipple piercings need.
2. Bella Straight Nipple Ring Retainer
Made from clear, high-quality Bioflex acrylic, this set ships 12 pieces at 14G, in sizes from 12mm to 19mm — enough range that you’re not guessing at fit. It’s lead-free, UV-stable, and nickel-free, which matters if metal allergies are part of why you’re switching to a retainer in the first place.
Pros: Multiple sizes in one order, metal-free and hypoallergenic, flexible enough for industrial piercings too.
Cons: Build quality is inconsistent across the pack, and pieces can work their way out if the fit runs loose.
3. Ruifan 14G Glow-in-the-Dark Straight Barbell Retainer
If you want something a little more fun for the months you’re stuck wearing a retainer, this 3-pair set in Bioplast acrylic glows and still checks every safety box — metal-free, hypoallergenic, and hospital-friendly.
Pros: Comfortable against skin during long wear, easy insertion, hospital-safe.
Cons: Runs a bit large for smaller nipple piercings; durability is middling.
4. Briana Williams 14G Flexible Nipple Piercing Retainers
Six pairs, each a different color, plus a velvet gift bag — this is the set to grab if you want variety without reordering every month. The ultra-flexible sparkle acrylic is nickel-free and metal-free, and at 14G it doubles as a tongue retainer if you need one.
Pros: MRI-safe, flexible without snapping, easy to wear daily.
Cons: Quality varies pair to pair, and some buyers find the barbells run short.
5. CrazyPiercing 8-Pair Nipple Piercing Retainers
Eight pairs (16 pieces total) of Bioplast acrylic at 14G, 16mm length, with a 6mm ball thickness — this is the best value pick if you go through retainers quickly, which most people do once daily nursing and clothing friction enter the picture.
Pros: Nickel-free and hypoallergenic, lightweight, biggest piece count of the five.
Cons: Surface finish feels less smooth than the pricier options.
Does a Nipple Piercing Affect Milk Supply?
No — a nipple piercing does not directly affect milk production. Milk is made in glandular tissue behind the nipple and areola, not at the piercing channel, so scar tissue from a healed piercing rarely blocks enough ducts to reduce supply.
The NCBI LactMed database notes that occasional duct scarring from piercing can occur but is not common enough to be a routine breastfeeding concern. That said, if you’ve noticed reduced flow on one side specifically, it’s worth mentioning to a lactation consultant rather than assuming the piercing is the cause.
The Bottom Line
Skip metal jewelry the moment nipple tenderness or swelling starts, and switch to a genuine Bioplast or hospital-grade PTFE retainer — the Forbidden Body Jewelry set is my top pick for anyone who wants one product that works through pregnancy, hospital visits, and early nursing. Budget for replacements; none of these are meant to last past a few months of daily wear. And no matter which retainer you choose, take it out completely before every feed — that’s not optional, it’s the standard every lactation authority agrees on. For more buying guides like this one, browse our buying guide category.
Frequently Asked Questions
Can I wear a nipple piercing retainer through an entire pregnancy?
Yes, as long as it’s a flexible, metal-free material like PTFE or genuine Bioplast and you’re not experiencing pain, discharge, or signs of irritation. Many people swap to a retainer in the first trimester as breast tissue starts changing and keep it in until they stop breastfeeding.
Do I need to remove my retainer for an ultrasound or MRI?
Most PTFE and Bioplast retainers are non-metal and considered MRI-safe, but hospital policy varies. Bring the product packaging or ask your piercer to confirm the material before your appointment so you’re not asked to remove it last-minute.
How long do nipple piercing retainers actually last?
Expect a few months of regular wear before a retainer needs replacing. Acrylic blends especially are prone to cracking with repeated bending, which is why most of the sets above are sold in multi-packs rather than singles.
What gauge should I buy for a healed nipple piercing?
14G is the standard gauge for a healed nipple piercing and what all five retainers above use. If your piercing was done at 16G and hasn’t been stretched, stick with 16G to avoid forcing a larger retainer into a smaller channel.
Is Bioplast better than acrylic for pregnancy jewelry?
Genuine Bioplast is more flexible and better tolerated long-term than acrylic, which tends to be more rigid and prone to chipping. The catch is that a lot of “Bioplast” listings online are actually acrylic blends, so check reviews and material specs closely before assuming you’re getting the real thing.
Tiger is a fashion&jewelry lover. He is also a fashion jewelry manufacturer that help thousands of small business to grow and also do business with some big fashion jewelry brands. He is a truly metal expert and he will share some information you are looking for.