Primers There are several types of Primers in cosmetics I will explain them to you!
Lip primers main function is Anti-Feathering so unless you have feathering issues you will only need this if you need to keep lip color/gloss on for several hours! It makes your lip products float on your lips! A great primer for all day lip color is a lip stain under your lipstick or lipgloss
Eyeshadow primers are used to prevent creasing, getting true color from your eyeshadow! We have all used an eyeshadow that has changed in color after it's sits on the skin! Primers help that!
Some use concealer as eyeshadow primer,I use regular eyeshadow primers and mediums.
Mediums are products like MAC Paint Pots, Shadesticks, NYX Jumbo pencils, cream eyeliners these are opaque which means your skin tone and color have no factor in how the shade of your eyeshadow appears this is the best way to get true color
Lash Primers are my favorite they are like mousse for your eyelashes a good lash primer will make any mascara good and you will have the lashes you want fuller thicker lifted longer lash primer is great!
Face primers are used to make your foundation last longer stay out of your pores because foundation should sit on the skin not be melted into pores! If you have oily skin you may find your makeup disappears easily a face primer before foundation will help! If you are going to be outside all day you may want to use a face primer. Are they necessary for all skin types on a daily basis? No
Tip if you are extremely oily theres a little trick that always works to keep foundation flawless for hours take a colorless setting powder and blend it into your pores before your foundation even better if you use an oil control colorless setting powder!
Explain what primer does
Basically Primer Primes the skin for makeup it gives you a smooth perfect landing for your makeup