Anastasia Vasilieva is a sustainable fashion researcher and founder of Treehouse, a certified organic kidswear brand. Her work on non-toxic clothing has been featured in podcasts, press, and guest lectures at FIT and Georgetown.
22 May 2025
22 May 2025
CONTENTS
If youāre here, chances are youāre dealing with a little one whoās constantly itchy, rashy, or just uncomfortable in their clothes. Iāve been there. My eldest would cry the minute I got him dressed in certain outfits, and it took me way too long to figure out it wasnāt just a fussy baby, nor was it his detergent; it was the fabric he was wearing.
Sensitive skin is more common than people think, and when it comes to babies and kids, their skin barrier just isnāt fully developed yet. Research shows the stratum corneum, the outer protective layer of skin, continues developing through around age 2, meaning little ones are more prone to irritation and moisture loss. That means what you dress them in really does matter.
In this guide, Iāll walk you through:
Why does fabric choice make such a difference
The best materials for kids with sensitive skin
What to avoid (even if the print is cute!)
What I personally look for when I shop
This really isnāt about being perfect. Itās about learning, making small changes, and helping our kids feel a little more comfortable in their skin.
In short, childrenās skin is thinner and more absorbent than ours. That means it reacts more easily to:
Scratchy textures
Trapped heat and moisture
Chemical residues from dyes or finishing treatments
Even small things, like a bulky synthetic seam or a tight waistband, can cause irritation. Itās not always about allergies. Sometimes their nervous system just hasnāt learned how to tolerate certain textures yet. And for some kids, especially those with sensory processing issues and/or autism, even everyday fabrics can feel overwhelming. When youāve got a tired toddler yanking at their neckline or melting down at dressing time, a softer, simpler fabric choice can make all the difference.
The Best Fabrics for Children's Sensitive Skin
Organic Cotton
If I could only choose one fabric, it would be organic cotton. Itās soft, breathable, and reliably gentle on skin. When you choose GOTS-certified cotton, youāre avoiding pesticide residues and chemical finishes. And itās more versatile than most people realiseājersey (stretchy and soft), muslin (light and airy), and even velvet are all different finishes of the same plant. Thatās the beauty of it: comfort and simplicity, in so many forms.
Pros: Soft, breathable, easy to wash Cons: Can shrink without pre-washing Best for: Everyday basics, underwear, pajamas
Linen has been a game-changer for warm weather in our house. Itās breathable, antibacterial, and naturally hypoallergenic. It starts off feeling crisp but becomes softer and more lived-in with every wash. Perfect for sweaty little necks and sticky summer afternoons.
Pros: Keeps skin dry and cool Cons: Wrinkles easily, starts out crisp Best for: Hot climates, summer outfits
Not all wool is itchy. Superfine merino is soft, temperature-regulating, and surprisingly gentle. It keeps babies warm in winter and cool in between seasons, wicking away moisture and odour as it goes. We use it for layering and sleep sacks, especially when the weather canāt make up its mind.
Pros: Warm or cool as needed, odour-resistant Cons: Needs gentle washing Best for: Base layers, sleep sacks
Silk
Silk has a reputation for luxury, but for sensitive skin, itās practical too. Itās smooth, naturally hypoallergenic, and reduces friction, especially helpful for eczema flare-ups. I wouldnāt dress a toddler in it head-to-toe, but as a layer or pillowcase, itās magic.
Pros: Gentle on friction-prone areas Cons: Expensive, delicate care Best for: Sleepwear, underlayers
Tencel (Lyocell)
Tencel is one of those fabrics youāll see promoted as sustainable. Itās semi-synthetic, made from wood pulp but chemically processed. That said, itās silky-soft, moisture-wicking, and doesnāt cling. I wouldnāt put it above natural fibers, but itās a solid option for soft loungewear.
Pros: Smooth, moisture-wicking Cons: Semi-synthetic, not as breathable as natural fibers Best for: Lightweight loungewear
Fabric Comparison Table: Quick Reference for Sensitive Skin
Can be more expensive than conventional cotton; ensure it's derived from sustainably managed forests and processed in a closed-loop system.
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Fabrics to Avoid for Sensitive Skin
Synthetics
These often show up under labels like "fleece" or "performance fabric" but are typically made from plastic-based fibers: polyester, acrylic, nylon, viscose, rayon, acetate, even lyocell. They trap heat, don't breathe, and can be chemically treated.
Treated Fabrics
"Easy care," "flame resistant," or "wrinkle-free" almost always means chemical coatings. I avoid them.
Rough Textures & Traditional Wool
Denim, canvas, and regular wool can be scratchy. Unless it's superfine merino, I skip it.
What to Look For
Certifications: GOTS, OEKO-TEX, Made Safe = fewer toxins.
Construction: Flat seams, tagless labels, and a proper fit help reduce irritation.
Avoiding flame retardants: Natural, snug-fitting sleepwear can pass safety standards without chemical treatments.
Dyes: Low-impact or plant-based dyes are gentler.
Washing Tips and Final Thoughts
Use fragrance-free, dye-free detergents. Skip fabric softeners, and use vinegar to rinse if needed. Hang dry when possible.
You donāt need to replace everything overnight. I started with what touched the skin most, pajamas, bodysuits, underwear, and built from there.
Good clothes wonāt fix every rash. But they can give your child one less thing to battle. Youāve got this.
Our commitment to you extends beyond just the our clothing - we prioritize the well-being of your children, the environment, and the workers who craft our pieces.