Your cells are surrounded by a very important type of lipid, called phospholipids. Phospholipids consist of a hydrophilic (or 'water loving') head and a hydrophobic (or 'water fearing') tail. Phospholipids like to line up and arrange themselves into two parallel layers, called a phospholipid bilayer. This layer makes up your cell membranes and is critical to a cell's ability to function.
On a film or modeling set, a makeup artist may spend six to eight hours doing makeup for the day. For an individual client appointment, the time span may be an hour to three hours. If a makeup artist is working for a bridal party, then he or she may spend the entire day working with clients.
But if you want to study just some branches of beauty then the breakdown of hours required vary individually. How long does beauty school take for just nails are about 600 hours maximum, same goes for makeup programs. Skin care programs require minimum 300 hours and maximum 1500 hours. Your state will determine the exact number of hours you will need to invest in your course of study.