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Frequently Asked Questions

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Why choose Kaizen over other fabrics?

Kaizen isn't just silk. It's a unique blend of 100% natural, grade 6A, 22 momme mulberry silk infused with antibacterial silver ions .

Unlike cotton (full of bacteria) or satin (made from synthetic fibers), Kaizen:

  • Does not clog pores
  • It does not absorb your treatments
  • It is hypoallergenic, soft and fresh
  • Protect your skin from acne and frizz
  • Stays clean up to 3 times longer

Taking care of yourself while you sleep starts with what touches your skin every night.
How does Kaizen help with skin problems?

Kaizen Silk is infused with silver ions, creating an antibacterial environment that helps prevent blemishes and breakouts.

Plus, being a soft, non-absorbent fabric, it won't clog pores or drag down your skincare treatments .

It benefits both dry and oily skin, reduces nighttime friction (preventing sleep wrinkles) and visibly improves skin texture . It also promotes collagen retention and regulates oil production.

Less bacteria, fewer marks, healthier skin.
What does it mean that Kaizen is infused in silver?

Silver infusion is a process in which silk fibers are immersed in a solution rich in silver ions , a natural mineral with antimicrobial properties. During this bath, the ions penetrate and bind to the fabric fibers, without altering their softness or structure. This technology allows silk to act as a natural antibacterial barrier , eliminating up to 99.7% of bacteria , mold, and other microorganisms. The result: a cleaner, safer, and visibly skin-friendly pillowcase.
Is the product ethically manufactured and not tested on animals?

Yes. All of our products are ethically manufactured and have never been tested on animals .

We have international certifications OEKO-TEX® , SGS and GOTS.
How long does silver ion treatment last? Is it proven to kill bacteria?

The treatment's effectiveness lasts for 18 months (80% effectiveness) . Starting at month 7.5, it will decrease by 5% every 3 months , based on washing every 10-15 days.
Is it safe to use?

Yes, the Kaizen sleeve is 100% safe for everyone. Its safety and effectiveness have been clinically proven through testing conducted by SGS , the world's leading inspection, verification, and certification company.

It is safe for:

  • Pregnant women
  • Children
  • People with sensitive skin

Plus, it's hypoallergenic , causes no adverse reactions, and is specially designed for delicate skin. Trust Kaizen quality for a safe night's sleep.
Is it proven to kill bacteria?

Silver ion technology works to eliminate two main types of bacteria, Cutibacterium acnes (C. acnes) [1] and Staphylococcus aureus (S. aureus) [2]

Both bacteria have been linked to acne vulgaris (common acne), which causes pimples, inflamed skin, clogged pores, red bumps and lymph nodes. [3] [4] This has been confirmed in the following studies:

[1] https://www.ncbi.nlm.nih.gov/books/NBK83685/

[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3503376/

[3] https://pubmed.ncbi.nlm.nih.gov/23375548/

[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2292600/
Are Kaizen products sustainable?

Producing 1 kilo of cotton requires 20,000 liters of water, while producing 1 kilo of silk requires 100 times less . This makes silk a much more sustainable and environmentally friendly option.

At Kaizen, we work to minimize our environmental impact . All of our products are safe and have international certifications that guarantee their quality and responsibility.

Care and Washing

How to wash Kaizen products?

To preserve quality, softness and benefits, follow these recommendations;

Pillowcases:

  • Hand wash or delicate cycle, using cold water.
  • Use Kaizen Detergent formulated specifically or a pH neutral one for silk.
  • Maximum 300 rpm (the lower the better).
  • Do not use bleach or fabric softener. Air dry, do not use in a dryer or in direct sunlight.
  • Iron at low temperature if necessary.

Masks and scrunchies:

  • We recommend washing exclusively by hand , with cold water and Kaizen Detergent .
  • Do not wring or rub vigorously. Air dry on a clean towel.

We formulated Kaizen detergent as the safest way to preserve silk without damaging its properties or shine.

*We are not responsible for damage caused by the use of other detergents.
How often should I wash Kaizen products?

Unlike other fabrics (washed every 2–3 days), Kaizen only needs to be washed every 10–15 days. This is possible thanks to the silver infusion , which keeps the silk clean for longer.

Shipping and Returns

How long does shipping take?
  • Spain: 24 to 48 business hours
  • Europe: 3 to 4 business days
  • US and South America: 10 to 15 business days

We do our best to ensure your order arrives as quickly as possible. Due to special dates, slight delays may occur. If you need assistance, please email us at info@kaizen-care.com.
Can I cancel or modify an order?

If you've entered an incorrect address or need to make a change, please contact us as soon as possible at info@kaizen-care.com , including your order number and the correct information.

Once the order has been sent, it is not possible to modify it , since the process depends on an external company.
Where is my order?

Once your order has been shipped, you'll receive a tracking code so you can track its status at all times.

You can also easily check the status of your shipment through our website chat : just click the chat icon in the bottom right corner, select Instant Responses , and choose Shipment Tracking . You'll just need to follow the instructions and enter your order number and the email address used for the purchase.

If you can't find the code or have any other questions, please email us at info@kaizen-care.com and we'll be happy to help you.
What do I do if the product is damaged or defective?

If your product arrived damaged or has a defect, please contact us as soon as possible at info@kaizen-care.com so we can help you.

Please include:

  • Your order number
  • Photo or video that clearly shows the problem

Our team will review your case and tell you what steps to take next.
How to request a product exchange?

To initiate an exchange, simply email us at info@kaizen-care.com with your order number. We'll be happy to help.

Once we receive the tracking number for your current return , we'll send you a store credit for the value of the returned product , so you can make a new purchase whenever you want.

  • If the new product is priced higher, you'll only have to pay the difference.
  • If the price is lower, we'll refund the difference.
How to return a product?

Email us at info@kaizen-care.com with your order number and we'll send you detailed instructions.

Please note that:

  • Products must be unused and in their original packaging , including the box and plastic wrap (if applicable).

You have 30 days from receipt of your order to request a return. After this period, returns will not be accepted. For more information, see our Return Policy .