What is silk good for when it comes to hair?

Silk reduces friction against the hair strands thanks to its naturally smooth surface, helping to prevent frizz, split ends, and breakage. Unlike cotton, silk does not absorb the hair’s natural oils, allowing the hair to retain its moisture balance more effectively. Silk also regulates moisture and helps maintain the hair’s temperature. Especially beneficial for curly, color-treated, fine, and damaged hair that is particularly sensitive to mechanical stress and moisture loss.

Is a silk pillowcase better than a satin pillowcase?

Both reduce friction against hair and skin compared with cotton, but the silk pillowcase has some natural advantages. Silk is a natural material with moisture-regulating properties that help hair retain its natural moisture balance overnight. It does not absorb the hair’s oils as readily as synthetic satin. For very sensitive, damaged, or color-treated hair, the silk pillowcase is the gentlest choice. The satin pillowcase is an excellent, affordable alternative with similar friction-reducing properties.

How do you care for silk products?

Hand-wash silk products in cold or lukewarm water using a mild shampoo or special silk detergent. Avoid hot water; if using a washing machine, select the delicate cycle only, and avoid spinning, which can damage the silk fibers and cause them to lose their natural sheen and softness. Never wring out silk; instead, lay the product flat on a towel and roll it up to remove excess water. Always air-dry flat and avoid direct sunlight, which can fade the color.

Why is silk good for the skin?

Silk’s naturally smooth surface reduces friction against the skin during the night, which can help minimize the appearance of sleep lines and reduce mechanical stress on the skin. Unlike cotton, silk does not absorb the skin’s natural moisture and oils as aggressively, helping the skin retain its moisture balance. Silk is also naturally temperature-regulating, feeling cool in the summer and warm in the winter. Especially appreciated by those with sensitive and dry skin.

Silk for Hair and Skin: The Complete Guide to Silk Pillowcases, Silk Scrunchies, and the Nighttime Ritual

Silk reduces friction against hair and skin thanks to its naturally smooth surface and moisture-regulating properties. Unlike cotton, silk does not absorb the hair’s and skin’s natural oils, making it the gentlest material for your nighttime routine.

Silk has been used for thousands of years for its softness and lustre. But it is not merely an aesthetic experience. Silk’s natural fibre structure has documented properties that make it unique for hair and skin—properties that no synthetic material can fully replicate.

Why silk is unique for hair

Silk is a natural material made from silkworm cocoons. Each silk fibre is naturally triangular in cross-section, giving the fabric its characteristic shine and smoothness. This is not a surface treatment but an inherent feature of the material’s structure. For hair, this means that the cuticle encounters minimal friction with every contact with the silk.

Silk also regulates moisture. It does not absorb the hair’s natural oils in the same way as cotton, allowing the hair to maintain its natural moisture balance more effectively overnight. For curly and wavy hair, which is especially dependent on moisture to maintain its definition, the difference is noticeable as soon as you wake up.

Silk pillowcase: Why it matters

During the night, we move many times, and each movement creates friction between the hair and the pillowcase. Cotton has a surface that rubs against the cuticle and lifts it, leading to frizz, dullness and increased sensitivity. Cotton also absorbs the skin’s natural moisture and oils during the night.

A 100% genuine silk pillowcase solves both problems. The hair glides freely without resistance, while the skin retains more of its natural moisture. Silk’s temperature-regulating properties also make it cool in summer and warm in winter.

Read more in our guide to silk pillowcases for hair and skin and our comparison of silk bonnets and silk pillowcases.

Silk scrunchie: A gentle hair tie with natural benefits

A 100% genuine silk scrunchie creates minimal friction against the hair strands thanks to silk’s naturally smooth surface. It does not absorb the hair’s natural oils, helping the hair retain its moisture balance even where it is secured. For curly hair, the pineapple method with a silk scrunchie is the best way to preserve curl definition overnight.

Read more in our guide to silk scrunchies and how to use them correctly.

Build your nighttime routine with silk

A complete nighttime routine with silk combines a silk pillowcase and silk scrunchie for maximum protection against friction. Tie your hair loosely in a low bun with the silk scrunchie and sleep on the silk pillowcase. For curly hair, the pineapple method with a silk scrunchie and silk pillowcase is the most effective combination.

FOAM’s Silk Soft Collection contains a pillowcase and hair tie (scrunchie) made from 100% genuine silk. FOAM’s Silk Sleep Set contains a pillowcase and sleep mask made from 100% genuine silk. The Dreamy Hair Silk Bundle contains a silk pillowcase, shampoo bar and DREAMY hair conditioner bar for a complete hair-care routine.

Read more about the nighttime routine in our guide to nighttime routines for hair and skin with satin and silk.

Silk vs satin: What’s the difference?

Silk is always a natural material with moisture-regulating properties and natural smoothness. Satin is a type of weave that can be made from synthetic fibres and is an affordable alternative with similar friction-reducing benefits. For those who want the most luxurious and natural option, silk is the obvious choice.

Read our comparison of satin vs silk for pillowcases and scrunchies for a more in-depth overview. Would you rather explore satin? Read our complete guide to satin for hair and skin.

Silk for hair and skin: Quick guide

Product	Contains	Best for
Silk Soft Collection	Pillowcase + scrunchie in 100% genuine silk	Daily hair care and nighttime routine
Silk Sleep Set	Pillowcase + sleep mask in 100% genuine silk	Complete nighttime routine with light blocking
Dreamy Hair Silk Bundle	Silk pillowcase + shampoo bar + DREAMY hair conditioner bar	Complete hair-care routine in one set
Silk scrunchie	Hair tie in 100% genuine silk	Daily use and pineapple method at night