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How does hyaluronic acid penetrate into the skin?

Thanks to the molecular structure of the yarn. The studies that we carried out in collaboration with scientific laboratories have shown that these small molecules inside the yarn can penetrate the skin layers into dermis thanks to the gold particles that act as a carrier, delivering the properties of hyaluronic acid.

When does the effect go out?

NYLSTAR's Hyaluronan fabric effectiveness is scientifically proved up to 100 washes.

Are there any side effects?

No, there are no side effects. This product is certified as non-toxic, free of chemicals and totally safe by OEKO-TEX Standard 100 & REACH.

Can I wash the Hyaluronan pillowcase in the washing machine?

Yes, you can wash your Hyaluronan pillowcase in the washing machine. It is recommended to wash and tumble dry at low temperature with gentle detergents.

Do you have any certifications to back up these claims?

Yes, all the tests performed to prove the effectiveness can be shared with our clients under request.

How long does it take to ship an order?

For orders within Spain, the approximate delivery times are 2 - 4 days.

For orders within Europe the approximate shipping time is 3 - 5 days.

Shipping times are estimates and may vary. Please note that during sales, winter holidays and summer holidays, orders may take a few days longer.

Do you make international shipments?

No, our online store only ships to European countries. Once your order is confirmed, you will receive a confirmation email when your order has been shipped.

Returns & Exchanges

Products purchased through our online store nylstarpillow.com can be returned up to 30 working days after receiving the order. Only items with a manufacturing error or defect can be returned. For hygienic reasons, it is not possible to return a pillowcase set once they have been opened out of their packaging. The refund will be made once the items have been returned to our offices. If you wish to return or exchange your purchase, please contact: info@nylstarpillow.com for more information.

Our mailing address is:


Avda. de l'Estació, núm. 53 17300 - Blanes GIRONA (Spain)

Tel.: 972 358 200 / Fax 972 350 501


Is there a guarantee?

Our pillowcases are covered by a one-month warranty. If the product presents a manufacturing defect within this period, we will exchange it for a new one free of charge. Please note that the warranty does not cover misuse or theft of the product. For further information please contact:


Do I have to pay customs?

International shipments do not include duties and taxes, customers are responsible for any customs fees, duties or taxes that may apply at the time of delivery. We are unable to calculate the exact amount of duties and taxes your order will incur, as these charges are imposed directly by the country to which the order is shipped.

Do you have pick-up points?

When you complete your order, you will be able to select all available shipping and pick-up options on the checkout screen.