[romeoEtJoliet]

There's more to skin-care than skin aging - some women struggle with acne for hormonal reasons and as a side effect, blemishes.

Sunscreen is also incredibly useful to prevent sun damage, and moisturizers can prevent deep lines later in life.

None of which is to say that people need to spend an arm and a leg on skin care products, but finding skin-care that works for you might be costly

(e.g., finding a moisturizer that is light enough for daily use, a daily sunscreen that doesn't make your face look metallic from zinc, a non-prescription retinoid available in a container that won't oxidize readily).

[lenticular]

That's true. Although Retin-A is the most effective topical acne medication as well. Aside from some medical moisturizers with urea, the most effective moisturizer is just Vaseline (I say this as a person with extremely dry skin and many problems resulting from that). It prevents the evaporation of water effectively. For the most part, moisturizers are only as effective as they are greasy.