Being in my 40's, I am passionate about anything anti-aging. I look after my skin as best as possible but, I began noticed how my face would be wrinkled in the morning. One day I received a silk pillowcase as a gift. And as I slept soundly that night, the Sleep ‘n Beauty silk pillowcase concept was born. I was amazed that m y face was wrinkle free and my hair was silky soft when I woke up. I began a journey to learn about silk and to find the best silk available. After extensive research and testing of numerous grades of quality and thickness, I settled on the finest, most luxurious silk of all, mulberry silk, which is known as the queen of silk. Sleep ‘n Beauty silk pillowcases are made from 100% natural, undyed, chemical free, 19 momme mulberry silk. There are many silk pillowcases available on the market. Some are inexpensive and made from synthetic silks or satin or silks that have a lower thread count, (or momme). I have used the highest quality mulberry silk.