TL;DR: A 2025 study found that lotion use is one of the strongest predictors of paraben exposure in infants as young as 1–3 months old. Parabens — a class of synthetic preservatives found in many conventional baby skincare products — are linked to endocrine disruption, including effects on thyroid and estrogen hormones. Here's what the science actually says, and what to look for on ingredient labels instead.
When you smooth lotion onto your baby's skin after bath time, you probably aren't thinking about preservatives. You're thinking about soft skin and the smell of clean baby and getting everyone to bed. That's exactly how it should be.
But if you're the kind of parent who flips the bottle over to read what's in it, you may have noticed something called methylparaben, propylparaben, or butylparaben on the ingredient list — and you may have wondered whether it matters. It does. And now there's new research to back that up.
What Are Parabens, and Why Do They End Up in Baby Products?
Are parabens a recent addition to skincare, or have they been around for a while?
Parabens are synthetic preservatives that have been used in cosmetics, pharmaceuticals, and food products since the 1950s. Their job is straightforward: prevent mold and bacteria from growing in water-based formulas. That sounds reasonable — until you look at what the research says about how they interact with human hormones.
You'll find them listed on labels as:
- Methylparaben
- Ethylparaben
- Propylparaben
- Butylparaben
- Isobutylparaben
These aren't rare ingredients. They show up in body washes, lotions, creams, shampoos, and baby wipes across dozens of mainstream baby care brands — many of which still market themselves as gentle or safe for sensitive skin.
What Does the New Research Actually Show?
How much paraben exposure are infants really getting from lotion?
A 2025 study published in the Journal of Exposure Science & Environmental Epidemiology found that lotion use is one of the strongest predictors of detectable paraben levels in infants as young as 1–3 months old. Over 70% of the infants studied had measurable paraben exposure — and the data pointed directly at topical personal care products as the primary source.
This matters because a newborn's skin is more permeable than an adult's. The skin barrier develops over the first year of life, which means what you apply to it absorbs more readily and more thoroughly than many parents realize.
Why does it matter that parabens are classified as endocrine disruptors?
Research published in Molecular and Cellular Endocrinology confirmed that parabens can bind to hormone receptors in the body — particularly estrogen and androgen receptors — and may disrupt normal endocrine function. In plain terms: these preservatives can mimic or interfere with the hormones that regulate development, reproduction, and metabolism.
A more recent assessment using in vitro, in vivo, and computational methods also confirmed that parabens exhibit thyroid receptor agonistic activity. Thyroid hormones are critical for infant brain development and metabolism — disruption during early life isn't a trivial concern.
The worry isn't one isolated exposure. It's the cumulative, low-level exposure through multiple products used multiple times a day, starting from the first weeks of life.
How Do You Actually Find Parabens on a Label?
Why is reading a baby product label harder than it should be?
Here's something that frustrates a lot of ingredient-conscious parents: you see "paraben-free" on the front of a bottle, flip it over, and find phenoxyethanol. Phenoxyethanol is a common paraben alternative — and it's not without its own concerns. The FDA flagged it in 2008 in the context of infant products, citing reports of central nervous system effects in nursing infants exposed through nipple cream. The EWG rates it a moderate hazard, particularly for use on infants.
The lesson here isn't to swap one synthetic preservative for another and call it clean. It's to read the full ingredient list — every word, every time — regardless of what the front of the package promises.
What does a genuine alternative to parabens actually look like?
The most transparent products are formulated with inherently stable ingredients that don't require heavy synthetic preservation, or use plant-based compounds with natural antimicrobial properties. At Kindred Naturals, our Baby Shampoo & Body Wash uses soapwort as a plant-based surfactant — no parabens, no phenoxyethanol, no synthetic fragrance. Our Magnesium Lotion is built the same way. You shouldn't need a chemistry degree to feel confident about what you're putting on your baby's skin.
Frequently Asked Questions
Are parabens in baby products actually harmful?
Current research classifies parabens as endocrine-disrupting chemicals that may interfere with estrogen, androgen, and thyroid hormone systems. A 2025 study found that infant lotion use significantly increases paraben exposure in babies as young as one month. While research is ongoing, many pediatric health advocates recommend avoiding them in infant products as a precaution.
Which parabens should I look for on an ingredient label?
Watch for methylparaben, ethylparaben, propylparaben, butylparaben, and isobutylparaben. They often appear as a group. Any ingredient ending in "-paraben" is one to note.
Is phenoxyethanol safe for babies?
Phenoxyethanol is a common paraben replacement, but it carries its own concerns. The FDA has flagged it in infant contexts, and the EWG rates it a moderate hazard. Many truly clean baby products, including those from Kindred Naturals, are formulated without both parabens and phenoxyethanol.
Do "natural" or "organic" baby products still contain parabens?
"Natural" and "organic" are largely unregulated terms in personal care. A product can use those labels and still contain synthetic preservatives. Reading the full ingredient list is the only reliable check.
At what age does my baby's skin barrier fully develop?
Infant skin remains more permeable than adult skin for roughly the first year of life, and the barrier continues maturing through toddlerhood. This is why ingredient choices matter most during the newborn and infant stage — the window when skin absorption is highest.
If you're looking for baby and family skincare with full ingredient transparency, visit shopkindrednaturals.com. We built our products to be the kind you don't have to second-guess.
Written by Mike & Carly Pronsky, founders of Kindred Naturals.