OEKO-TEX Certified
OEKO-TEX certified mulberry silk is tested for harmful substances, making it suitable for nightly contact with hair and delicate skin.
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Long hair does not fail because a bonnet is thin. It fails because the cap is too shallow, so lengths coil back on themselves and tangle anyway. This one is cut deeper, with room for hair past the shoulders to sit loosely coiled, so it stays moisturised and tangle-free until morning.
€ 45
Free shipping on orders over €89
The silk sleep cap is made from 100% mulberry silk, designed to protect hair while you sleep. The long bonnet shape gives fuller coverage for thick and long hair.
The extended shape helps hold longer lengths, braids, curls, and thicker hair more comfortably than a standard short bonnet.
Smooth mulberry silk helps reduce friction while you sleep, supporting softer-looking hair with less morning frizz and fewer tangles.
OEKO-TEX certified mulberry silk is tested for harmful substances, making it suitable for nightly contact with hair and delicate skin.
The smooth silk surface helps hair glide while you sleep, reducing friction that can cause tangles, frizz, flyaways, and fragile ends.
Mulberry silk absorbs less moisture than many common fabrics, helping hair keep more natural hydration and feel softer by morning.
Silk helps limit excess moisture on the sleep surface, supporting a cleaner-feeling bonnet and helping protect hair from dust mites between washes.

Before You Buy

A soft edge that holds without gripping.
This is the deep one. Long hair does not fail because the silk is thin, it fails because the cap is too shallow: the lengths fold back on themselves inside it and tangle anyway.
Cut deeper, so hair past the shoulders coils in loosely instead of packing in. A soft elastic edge holds it without gripping the hairline.
Three Steps
Coil, do not stuff
Wind the length loosely at the crown. Packed hair pushes back against the cap and works it off.
Set it back
Sit the edge about a finger's width behind the hairline, not on it.
Let the depth work
The extra depth means the coil sits inside the cap instead of straining the edge outward.
One more thing that helps, and it is not the bonnet: cotton grips silk and pulls a cap off through the night. On a silk pillowcase the two surfaces slide instead of catching.
Depth is what long hair needs

19 momme mulberry silk, woven rather than printed.
Satin describes how a fabric is woven, not what it is made of. Most bonnets sold as satin are woven polyester. This one is 100% mulberry silk, a natural protein fibre.
Momme is how silk is weighed. 19 momme is the working weight for something worn on the head: heavy enough to hold its shape and survive washing, light enough that it does not sit warm. Our pillowcases go heavier at 22 momme, because a pillowcase is lain on rather than worn.
Polyester holds heat and moisture against the scalp. That is usually why a bonnet gets pulled off at two in the morning.
Mulberry silk is a breathable protein fibre that moves moisture rather than trapping it, so it stays closer to skin temperature. If you sleep hot or wake with night sweats, that is the difference worth paying for.
By hand, the gentlest way
Cool water, a mild detergent made for silk or wool, no bleach, no wringing. Press the water out in a towel and line dry away from direct sun.
Can it go in the machine
Yes, with care. A mesh bag, the delicate or wool cycle, cool water, lowest spin. Never tumble dry. It is harder on silk than hand washing and will shorten the life of the cap, but one careful cycle will not ruin it.
The first morning
Ends that comb out without catching, and far fewer knots at the nape where long hair usually collects them.
After two to three weeks
This is where people notice condition: smoother ends, less frizz along the lengths.
Where it shows least
A bonnet works by reducing friction. On coarse hair that does not tangle much to begin with, the difference will be quieter. That is an honest limit of what silk does.
Clear answers about long silk bonnets, overnight hair protection, fit, and care.
Depth matters more than width. Long hair fails in a shallow cap because the lengths fold back on themselves inside it and tangle anyway. Look for a cap cut deep enough that hair past the shoulders can coil loosely inside rather than being packed in.
You do not have to. A loose coil at the crown is enough, and it is gentler than a braid, which can leave a bend by morning. Braiding helps mainly if your hair is very long and you want a defined wave the next day.
Yes. A silk sleep cap can be good for hair because smooth mulberry silk creates a lower-friction surface than many standard pillow fabrics. It helps reduce overnight rubbing, tangles, frizz, and friction-related breakage, especially for long, curly, dry, or color-treated hair.
SENSOIRE silk bonnets are made with premium 100% 19 momme mulberry silk and designed for smooth overnight hair protection. Unlike many regular bonnets made from polyester satin or shorter shapes, the long silk bonnet gives fuller coverage for braids, thick hair, and long hair.
Gather your hair loosely, place the lengths into the long section of the bonnet, then adjust the elastic edge around your hairline. The fit should feel secure but not tight. For long hair or braids, let the cap hold the hair naturally instead of twisting it firmly.
You do not have to wear it every night, but regular use gives the best results. Wearing a silk bonnet overnight can help protect hairstyles, reduce morning frizz, and keep long hair, curls, braids, or textured hair smoother between wash days.
Mulberry silk is naturally smooth and gentle against the skin, and the sleep cap is listed with OEKO-TEX 100 certification. If you have very sensitive skin or a known textile allergy, test the fabric briefly first and follow your usual care guidance.
Hand wash your silk sleep cap in cold water with a mild detergent. Do not bleach, twist, or tumble dry. Rinse gently, press out excess water with a towel, and line dry away from direct heat to help preserve the silk’s smooth feel.
The Sensoire Standard
Natural Materials
Grade 6A mulberry silk, French flax linen and bamboo lyocell, chosen for how they feel in bed.
Fair Pricing
Fine natural fibres at a fair price, sold directly.
Secure Checkout
Encrypted payment through a secure checkout.
Delivery & Returns
Free delivery on orders over €89. Returns within 14 days.
Creators & Community
Unscripted mornings with Sensoire, filmed and photographed by the people who actually use our products at home.
Watch the videosAnswers are AI generated. For an existing order, email contact@sensoire.com

Martha –
Exactly as described! Lovely quality, and my hair turned out great!
Heidi N. –
Ich liebe diese Schlafmütze!!! Meine Haare sind am morgen immer so schön weich!! Ich empfehle diese Schlafmütze aus Seide sowas von.
Ivianne E. –
Protects my long hair from tangling while I toss and turn at night.