What age should girls start using skincare products?

Like my question ^ says, I am wondering when would be the appropriate age for girls (or guys) to start using skin care products since some skincare products are a bit too strong for prematured skin.

What skin care line would you recommend? I've recently purchased some products from Shisheido: mosturizer, softener, cleasing foam, sunblock, and some eyecare products for dark circles and anti-wrinkles around the eyes.

Is 17 a good age to start?