Alright gang, now we are getting to the big potatoes! ...Foundation. This has got to be one of the trickiest parts of makeup because when it comes to makeup, foundation is King. Since this topic is actually pretty hefty, I'm going to break it up into two posts. This one will cover the lighter end. I'm just going to jump right into it.
Foundation ranges from full coverage to sheer, liquids to cream, thin to thick, etc.
On one end of the spectrum are your tinted moisturizers like BB and CC cream. They aren't really "foundations" but they contain a bit of pigment that could even out the complexion depending on the level of discoloration. These are for the "girl on the go," and said girl probably already has pretty great skin. Likewise sheer foundations like the Nars Sheer Glow line offers the staying power of a foundation but the natural finish of a tinted moisturizer.
On the other end of the spectrum is the full coverage foundation. This includes foundations like the Kat von D Lock It series and the Fenty Beauty Foundations. Foundations like this eradicate the need for heavy correcting and concealing and the finished product tends to be more matte. For skin that is super dry but also has a lot of discoloration, skin prep has got to be key because the fuller the coverage, the more matte the foundation, and as a result the skin can look very cakey.
Creams are on the other end of the spectrum and are generally highest in coverage. You can thin them out with a little moisturizer like Embryolisse. Creams also come in varying degrees of coverage and are buildable, then you have creams like the Kryolan TV Paint Stick, that will cover not only your blemishes, but your sins as well.
Bear in mind, coverage and longevity are two different things. So the coverage can be great but depending on a foundation's formula, a light water based foundation may have more staying power than an oil based cream (unless your skin prep, again, is A1).
Foundations can come in different textures. Liquids can range from thin to thick, provide full coverage or sheer. A Kat von D Lock it foundation is going to be significantly thicker than Fenty, for example. In fact, liquid foundations are very versatile in formulation. The blessing with cream is that you can make it more sheer by using an oil based moisturizer (do NOT use water based) and the texture of creams are pretty consistent.
I would say that for models, it is important for the skin to be fresh and natural. I recommend using foundation sparingly unless the person has serious acne marks and using thinner foundations since most of them are buildable.
More to come on foundations....