Satin is a weave, silk is a fibre
Satin describes how a fabric is woven. It is a weave with a structure that puts the shine on one face of the cloth and the matte on the other, which is why satin catches light the way it does. A satin can be made from polyester, from silk or from a blend, and the weave alone tells you nothing about what it contains. Most satin on the high street is polyester.
Silk is a fibre, not a weave. It is a natural protein fibre, and it can be woven into satin as readily as into a flat cloth. So a silk nightdress is generally also a satin nightdress, while a satin nightdress is very often not silk at all.
A satin nightdress and a silk nightdress can look identical in a photograph and cost very different amounts, and neither word on its own tells you which one you are looking at.
What we actually sell
It is worth being direct here: we do not currently sell a silk nightdress. Everything in our nightwear collection is a synthetic weave or a blend. That is not a shortcoming to be talked around. It is the fact you need in order to decide whether to buy from us, so here is the range, piece by piece, with what each is actually made of.
Larissa Nightwear, £44.99. Sizes S, M and L, in Blue and Pink. The product copy calls it a satin nightgown, decorated with lace, with what it describes as an effective cut on the back, and it never claims silk, so treat it as a satin weave rather than a silk fibre. The listing does not print a fibre content, so if that matters to you, ask us before you order.
Luminous Goddess Silk Nightdress, £54.00. Sizes S, M, L and XL, in Red, Black and White. The name contains the word silk, and the copy is more honest than the name: it describes an imitation silk fabric, made from a polyester blend that provides a silky feel, and it is machine washable. It is not silk. We would rather say that plainly than let the product title do the work: a name is not a fibre content, and a polyester blend described as silky is a sound product that does not need to borrow a fibre it does not contain.
Lustrous Goddess Nightgown, £59.99. Sizes M, L and XL. A blend of polyester, rayon and lace.
Luxurious Goddess Robe Set, £75.00. Sizes M, L and One size. A lightweight blend of polyester and nylon, built as a mid-calf robe with a coordinated sleepwear piece.
Stella Nightwear, £39.90. Sizes S, M and L. A nightdress with a padded bra, lace inserts and transparent material.
Five pieces, and not one of them is sold as silk. Only two, Stella at £39.90 and Larissa at £44.99, sit under £50. If you came here looking for silk, we cannot sell it to you today; the rest of this article is about choosing well among what we have rather than pretending the gap is not there.
How they wear
Heat and moisture. Silk is cooler against the skin and breathable, which is why it has a long association with warm climates and warm sleepers. Polyester does not breathe the same way and holds warmth, so it feels warmer to sleep in. A satin woven from polyester behaves like polyester, not like silk, however much it shines.
Drape. Both fall softly, which is much of the appeal. Silk has a weight and fluidity of its own; a polyester satin can imitate the surface convincingly but tends to feel lighter and more slippery in the hand.
Durability. This is where polyester blends earn their place: hard-wearing, colour-fast, resistant to creasing and untroubled by repeated washing. Silk is strong in its own right but delicate in use, marks with water, dislikes rough handling and loses its finish faster.
Cost. Silk is expensive to produce and expensive to own, and the care is part of the cost rather than an afterthought. A polyester satin brings the look of the fabric within reach of an ordinary price, which is the honest reason it dominates the high street.
None of this makes one better. It makes them suited to different things: a synthetic blend for something you will wear often and wash without ceremony, silk for something you are willing to look after.
Care differences
Polyester blends are machine washable, the practical advantage of a synthetic weave over a natural fibre. Wash cool, keep the machine gentle, and dry away from direct heat; the Luminous Goddess page states its machine washability outright, and the care label on the piece in your hands is the final word. Our guide to washing lingerie covers temperature and detergent in detail, and most of it applies to a nightdress as readily as to a set.
Silk is a different proposition: hand washing in cool water with a mild detergent, no wringing, no tumble drying, and drying flat away from sunlight. Some silks take a delicate cycle, but the safe assumption is by hand until the care label says otherwise. It stains readily with water and perspiration.
Storage matters for both. Synthetics want room so they do not crease along a fold, with metal hardware kept away from fine fabric. Silk wants to be kept out of sunlight, which yellows it, and hung rather than folded where possible. Our guide to storing lingerie covers both.
One caution on size before you buy: our nightwear does not run to one fit. Sizes are listed per piece, from S to XL depending on the style, and the size guide is the place to check measurements rather than assuming your usual size carries across the range.
Which one to buy
If budget sets the decision, silk is out of reach at most price points and the question becomes which synthetic piece to choose. Stella at £39.90 and Larissa at £44.99 are the two under £50; the under £50 collection compares them against everything else at that price.
If season sets it, a warm sleeper will find polyester satin hot, and silk's breathability is the quality they are actually buying: a real argument for waiting and spending more. No amount of shine on a synthetic closes it.
If care sets it, the answer is straightforward. A machine-washable blend that goes in with the rest of the wash will be worn far more often than a hand-wash-only piece that stays in the drawer. Worn often and washed easily beats beautiful and rarely worn, for most people.
If it is a gift, the size question matters more than the fibre. A robe set in M, L or One size is more forgiving than a fitted nightdress, and the Luxurious Goddess Robe Set at £75.00 carries the least sizing risk in our range. Pair it with something from our lingerie sets only if you know the size.
And if what you want is silk, buy silk. From us that means waiting, because we do not sell it today, and we would rather tell you so than sell you a polyester blend with a name that suggests otherwise.