Silk Bonnets in Ireland: A Buyer's Guide

A good silk bonnet should be barely noticeable at night and quietly obvious by morning. Less friction. Less frizz. Less disruption to the hair you went to bed with.

This guide is for anyone buying a silk bonnet in Ireland who wants to understand what actually matters: the silk quality, the construction, the fit, and the small details that decide whether a bonnet stays on comfortably or ends up beside the pillow by morning.

What a Silk Bonnet Does, and What It Does Not

A silk bonnet does one simple thing well. It puts a layer of smoother fabric between the hair and whatever the head rests on overnight, which means less friction, less drag on the cuticle, less breakage at the ends, and less frizz by morning. Over months of consistent use, hair that was being slowly worn down by a cotton pillowcase tends to look smoother, hold its shape longer between washes, and lose less moisture overnight.

That benefit is real and well documented in dermatology guidance. The American Academy of Dermatology, in its "6 curly hair tips from dermatologists", advises that "using satin or silk bonnets or pillowcases may also reduce friction and preserve your hairstyle". The recommendation is general to silk and satin, with the higher-quality option being genuine mulberry silk.

What a silk bonnet does is not dramatic. One night on a bonnet will not transform anyone's hair. Six months of nightly use, on a bonnet made of the right silk with the right construction, is a different conversation. The benefit is cumulative. Buyers who expect an overnight before-and-after tend to put the bonnet in the drawer after a week.

It also does not treat hair loss, regrow hair, or undo the effects of heat or chemical damage. It reduces one specific overnight stressor, friction, and lets the rest of a sensible hair routine compound on top of that.

The Three Silk Specs That Matter

Three details on the label decide whether a silk bonnet is worth what it costs. Anything else on the page is marketing.

Momme weight. Momme is the unit used to measure the density of silk fabric. A higher number means a denser, more substantial cloth. For sleep accessories, the range runs from roughly 16 to 23. 23 sits at the top of that range and is the practical right weight for nightly use. It is dense enough to feel substantial and smooth, light enough to stay comfortable on the head for a full night, and durable enough to hold up to years of washing. Bonnets pitched higher than 23 trade comfort for density, and the gain is not worth the loss. Bonnets at 19 or 22 are still real silk, but the feel and the lifespan are a step below. Still Suain bonnets are 23 momme. The longer explainer on momme weight lives in what 23 momme silk actually means.

Silk grade. 6A is the highest grade of mulberry silk in common use. It refers to long, uniform filaments, a clean surface, and consistent fibre quality. Lower grades exist in products that are still genuinely silk, and the difference is real once you have handled both. A bonnet that does not state a grade is usually a lower grade.

Certification. Two certifications are worth recognising. GOTS, the Global Organic Textile Standard, is the most widely recognised independent organic certification for textiles, covering organic fibre content as well as environmental and social criteria across the supply chain. OEKO-TEX Standard 100 confirms a textile has been tested for harmful substances and certified safe for human contact. A product can carry one without the other. A genuinely premium silk bonnet usually carries both. Still Suain bonnets are GOTS-certified organic mulberry silk and OEKO-TEX certified.

Three quick checks before paying. Does the page state the momme weight as a specific number, not as "premium" or "high grade"? Does it state the silk grade? Does it name at least one independent certification? If any of the three is missing, the price is probably wrong for what is in the bag.

Construction: Why a Silk Bonnet Stays On, or Does Not

The most common complaint about silk bonnets, by a wide margin, is that they slip off during the night. Three construction details decide whether a bonnet earns its place on a head for eight hours, or ends up on the duvet by 3am.

The first is the layer of fabric. A single-layer silk bonnet feels light in the hand and at the till, but it tends to lose its shape after a few washes, slip more easily on a moving head, and wear faster at the seams. A double-layered bonnet holds its shape overnight, sits more securely on the hair, and lasts visibly longer through repeated hand washing.

The second is the closure. A thin elastic band is the cheapest closure to manufacture and the worst to sleep in. It tends to dig in across the forehead, cause pressure marks, and either compress the hairline or give up tension within a few weeks. An adjustable drawstring lets the wearer tighten the bonnet to their own head and hair, without compressing the curls or the scalp underneath. The drawstring should sit at the back of the head, not across the forehead. Bonnets advertised as "one size fits all" usually rely on a single elastic band, which works for a narrower range of head sizes and tends to weaken first.

The third detail is how the bonnet sits on the hair underneath. A bonnet sized for short, smooth hair will not hold a full curl set, a wash-and-go, or a protective style. A bonnet roomy enough to cover the hair without flattening it is what most people want overnight. That is a sizing question more than a silk question, and it is covered later in this guide.

One honest caveat. No silk bonnet is fully slip-proof. Restless sleepers, very fine hair, and heavy oil routines all make any bonnet more likely to shift. A verified five-star review on our silk bonnet, from Ciara in April 2026, notes that the bonnet slips slightly through the night even with the drawstring tightened. A double-layered bonnet with an adjustable drawstring will stay on for the majority of sleepers most nights. It will not promise to stay on every night for every sleeper, and any brand claiming otherwise is overpromising.

Hair Types and Who Benefits Most

A silk bonnet is useful for most hair types. The benefit is most noticeable in three groups.

The first is curly, coily and textured hair. The cuticle layer is more vulnerable to friction, the moisture demand is higher, and a silk bonnet helps preserve curl pattern, definition and product overnight. This is the hair type the AAD guidance speaks to most directly, and it is also the type where buyers tend to notice the biggest day-to-day difference. The longer treatment of this argument is in our piece on why silk is the best overnight protection for curly and textured hair.

The second is anyone preserving a blow-dry, a set or coloured hair. Smoother fabric overnight means less disruption to the style, less frizz at the roots in the morning, and a less aggressive routine the next day. Bleached or chemically treated hair is more porous and more friction-sensitive than untreated hair, which is one reason silk routines have a strong following in the colour-treated community. A real review on our silk bonnet, from Christine B. in March 2026, comes from a customer with bleached hair and a hair-loss condition, who reported a visible improvement after one week of nightly use.

The third is anyone wearing a protective style: braids, twists, locs, weaves. A silk bonnet protects the style itself, reduces friction at the edges where breakage tends to start, and extends the life of the install by days or weeks rather than hours.

For longer, fine or straight hair, the benefit is quieter but real: less tangling at the ends, less morning frizz around the crown, less moisture loss. Fine hair in particular tends to wake up flatter on a cotton pillowcase, and a silk bonnet (or a silk pillowcase, or both) is a low-effort way to keep some volume overnight.

For very short hair, a bonnet is rarely the right call. The friction case is the same, but the practical fit becomes awkward. A silk pillowcase typically does most of the same work without the overhead of putting a bonnet on every night.

Fit and Sizing

The right size of bonnet depends on two things: head circumference and the volume of hair sitting inside the bonnet.

Most adult heads fall between 55 and 60 centimetres in circumference, measured around the widest part across the forehead and the back of the head. A standard adult silk bonnet is designed for this range. With fine, straight or shoulder-length hair, the standard size sits comfortably with room to spare.

Hair volume changes the maths. Curly, coily, thick or long hair takes up more space inside the bonnet than the head measurement alone suggests. A pineapple curl set, a wash-and-go, or a long protective style needs roughly a size's worth of additional room. Buyers in this category tend to need either a larger bonnet or one with a deeper crown, and the standard size can feel tight on a setting where the hair underneath is bulky.

A standard adult silk bonnet works for most buyers in the 55 to 60 centimetre range. For protective styles, very long hair, or head circumferences at the upper end, a roomier bonnet is the better answer. XL silk bonnets are still uncommon in Ireland and worth asking about before paying.

One rule of thumb worth holding. If the bonnet feels secure but not pinching, the fit is right. If it pinches at the temples or leaves a mark on the forehead by morning, it is too tight. If it shifts on the pillow within an hour of going to bed, the closure is too loose and the drawstring needs to come in.

Care: Washing, Drying, Lifespan

Silk responds well to gentle care and badly to heat or harsh detergent. The care rules for a silk bonnet are the same as for any premium silk piece, and they are simple.

Hand wash in cool water with a pH-neutral silk detergent or a gentle wool wash. Avoid fabric softener, bleach and biological detergents, all of which break down silk fibre over time. Squeeze the bonnet gently to remove water rather than wringing it, lay it flat on a clean towel away from direct sunlight, and let it air dry. A silk bonnet should never go in the tumble dryer at any temperature. The heat permanently weakens the fibre.

Wash every two to four weeks depending on how often the bonnet is worn and whether overnight hair products are used. Anyone applying heavier oils, curl creams or leave-ins overnight will need to wash sooner. Spot-clean any product residue as soon as it shows.

With this kind of routine, a 23 momme mulberry silk bonnet should hold its surface, shape and drawstring tension for years rather than months. A bonnet that fades, loses tension or thins out within a year is almost always either lower momme, lower grade, or both.

Buying a Silk Bonnet in Ireland

A few practical notes for buying a silk bonnet in Ireland in 2026.

When comparing silk bonnets, look beyond the headline claim of "100% silk". Check the momme weight, the silk grade, the construction, the closure, the sizing, the delivery time, and whether the brand gives clear information about certification and care. A page that hides any one of these is usually hiding something.

On price. The fair range for a genuine 23 momme, 6A grade, GOTS-certified silk bonnet sold in Ireland sits roughly between €60 and €90. Below €30 to €40, the silk is either lower momme, lower grade, missing certification, or partially blended with cheaper fabric. Above €100, the price is paying for brand positioning rather than material. The Still Suain silk bonnet sits at €70 in the standard size, with four colours: Deep Blue, Midnight Black, Ivory White and Dawn Pink. An XL size is in development.

On delivery. Buyers in Ireland are used to next-day on most premium goods. Several Ireland-facing silk retailers run on five to seven day delivery windows, which is fine when planned but slow if the bonnet is a gift. Still Suain ships tracked next-day across Ireland with a same-day dispatch cutoff at 1pm, from Cork.

On origin. Almost no silk sold in Ireland is woven in Ireland. The honest framing is to say where the silk is made and what that means. Still Suain bonnets are designed in Cork and made in Suzhou, the silk capital of the world, where mulberry silk has been produced for centuries. 

On trust. Real reviews are more useful than badges. The Still Suain silk bonnet currently has 7 verified five-star reviews on Judge.me, with over 100 verified five-star reviews across the wider range. Since launching in February 2026, the silk bonnet has sold out three times. Press placements include the Irish Independent, Irish Examiner, VIP, Stellar and InBusiness. 

For the buyer who has narrowed the choice down to construction and fit and wants a deeper read on each detail, our companion piece on how to pick a silk hair bonnet that actually works walks through the same checklist at the spec level. If the pillowcase is also part of the routine, our Organic Mulberry Silk Pillowcases use the same 23 momme, 6A grade, GOTS-certified silk as the bonnet.

Frequently Asked Questions

What is a silk bonnet?
A silk bonnet is a fitted silk covering worn at night to protect the hair from friction against the pillow. The best ones use mulberry silk with a stated momme weight and grade, are double-layered for shape, and use an adjustable drawstring to stay on the head through the night. Single-layer bonnets with thin elastic bands are cheaper, less comfortable and shorter-lived.

Does a silk bonnet really protect hair?
Silk has a smoother surface than cotton, so hair experiences less friction against it during sleep. Less friction means less breakage, less frizz and less moisture loss. The American Academy of Dermatology recommends silk or satin bonnets and pillowcases to reduce friction and preserve hairstyle, particularly for curly and textured hair. The benefit is cumulative over weeks and months, not dramatic overnight.

What momme weight is best for a silk bonnet?
Momme weights for sleep accessories run from roughly 16 to 23. 23 sits at the top of the range and is the practical right weight for nightly use. It is dense enough to feel substantial and durable, while staying soft against the hair. Bonnets pitched higher than 23 trade comfort for density without a meaningful gain.

Will a silk bonnet stay on overnight?
The right one will, on most nights, for most sleepers. Two construction details decide whether a bonnet stays on: a double-layered build that holds its shape, and an adjustable drawstring closure that can be tightened to the wearer's own head without compressing the hair underneath. No bonnet is fully slip-proof for every sleeper, and any brand claiming a guaranteed stay-on outcome is overpromising. Restless sleepers and very fine hair are the most likely to see slip.

Are silk bonnets only for curly hair?
No. The benefit is most noticeable for curly, coily and textured hair, and for anyone preserving a blowout, a colour treatment or a protective style. For longer, fine or straight hair the benefit is quieter but real: less tangling at the ends, less morning frizz, less moisture loss overnight.

How do you wash a silk bonnet?
Hand wash in cool water with a pH-neutral silk detergent or a gentle wool wash. Avoid fabric softener, bleach and biological detergents. Squeeze the bonnet gently to remove water rather than wringing it, lay it flat on a clean towel away from direct sunlight, and never put a silk bonnet in the tumble dryer. Washed this way, a 23 momme bonnet should last years rather than months.

A Small Piece, Worth Choosing Well

A silk bonnet is a small piece of a night routine that does steady work over time. Worn properly, it reduces friction, preserves the style you went to bed in, and quietly becomes one of the most used pieces in a hair-care drawer.

At Still Suain, our Organic Mulberry Silk Bonnets are crafted from 23 momme, 6A grade, GOTS-certified organic mulberry silk, double-layered for shape, with an adjustable drawstring designed to stay secure through the night. They are designed in Cork and made in Suzhou, the silk capital of the world, where mulberry silk has been produced for centuries.

Written by Ais, founder of Still Suain, in Cork.