Slide shows are primarily used on the homepage. They have attractive pictures or advertising banners that fade in and out. The point of the slide show is to cross-promote different products, different services, different sales, or the best points of your business…. Or in the case of makeup different skin types! If you put pictures of different skin type models in the slide show, then you can point out that your products apply to all skin types. The customer automatically knows you have what they need in the shade they need it.
I would use different skin types if I had my own cosmetics store… or maybe even both skin types and advertisements!… ie… “Pure Minerals, Purely Good for you…. ” with a beautiful model of one skin type and then “Our ingredients have this and that” on another ad with another model of a different skin type. Again, so the customer automatically knows you have what they need in the shade they need it.
So again, slide shows are for getting across multiple messages in a short span of time (fast advertising in a bling bling kind of way).
Check out my portfolio, and browse through the different live examples, the ones with flash and the ones without… And see how the flash affects the presentation. And then look around at designer websites of top brand name websites and your strongest competitors… Probably the majority of them have a slide show themselves! lol – why? because largely it works!