What's the difference between BB Cream, CC Cream and Foundation?

What's the difference between BB Cream, CC Cream and Foundation? BB Cream: BB cream stands for blemish balm, blemish base, beauty balm. BB cream is promoted as an all-in-one facial cosmetic product to replace serum, moisturizer, primer, foundation and sunblock. It can be worn alone as a tinted moisturizer, over serum and moisturizer as a regular foundation, and under powder, depending on the desired amount of coverage. CC Cream: Colour Control cream, or Colour Correcting cream, is a refined Blemish Balm (BB Cream). CC cream is reputed to include sun protection, along with better skincare properties (such as anti-aging, hydration, blemish prevention etc. Foundation: Foundation is a skin coloured cosmetic applied to the face to create an even, uniform colour to the complexion, to cover flaws, and, sometimes, to change the natural skintone.