The patented Rayosan™ technology by Clariant increases the Sun Protection Factor of fabric without changing the appearance, handle, and "breathability" of it. Using this kind of fabric will offer another layer of protection for baby's sensitive skin, especially before the recommended age of using sunscreen.
Here's how it works:
Think of the Rayosan™ process as an invisible dye. It acts like a mirror and will deflect the harmful UVA and UVB rays off the fabric. These rays are bounced back and prevented from going through the fabric and harming baby's delicate skin.
Although it is a chemical process, it was tested and passed the Oeko-Tex 100 certification process, which ensures us that it was tested for harmful substances - and passed. We share Oeko-Tex commitment to your personal safety and the support of environmentally sound processes and you can rest assured that the product you have will not harm you or your child. The dye is considered to be durable for the life or the garment. It is long lasting, but will start to gradually wash out after 30 washes or so.
The Rayosan™ coated fabric's SPF value ranges from 44-48.