Im a big fan of Cliove keratin Mask. I have long, thick, straight hair that has traditionally been healthy, but after a few years of color treatments and an unusually dry winter, I've been fighting a dry/flaky scalp and some frizziness. I apply a generous amount directly to my scalp, through the length of my hair, and throw it up in a bun for 10-20 minutes. I use it once a week, and this hair mask is amazing and hydrates my hair without making it greasy. It smells great and my hair feels soft, and shiny.