Silk or satin. When you lay your head down on a cotton pillowcase, the fabric friction can cause knots and tangles in your hair. This is more likely to happen if you have curly locks. By contrast, silk or satin pillowcases are smooth fabrics that allow your hair to slide across the surface with less resistance. This also helps reduce frizz for people with curls.

Fact

There are 79 known moons orbiting Jupiter.

Jupiter is the planet in our solar system with the most moons, and it also has the largest moon in our solar system.

That moon is called Ganymede and is 33,279 miles (5,262 km) in diameter – that’s bigger than Mercury and it is visible with just a pair of binoculars!