Working overnight to ensure your hair is kept fresh and vibrant the perfect hair day phd night cap overnight perfector by living proof is a leave in treatment that helps increase hair shine bring out long lasting vibrant colour and leave hair easier to manage featuring a formula thats free from silicone and oils it is fast absorbing pillow safe and weightless to use apply evenings before going to bed apply 2 3 pumps and distribute from the root to the tip focusing on the ends