lurkingaround
I've pasted the bit below from Beautypedia (aka Paula's Choice)
I think it's a fair commentary - it doesn't say it will turn back time but it does say the serum will help skin repair itself which may in turn help collagen production etc.
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This is rated highly not on the basis of its wrinkle-dashing or lifting claims but because it contains numerous skin-repairing ingredients and plenty of antioxidants that help improve the way skin looks and feels. In that sense, which is what matters most for your skin, Perfectionist [CP+ R] Wrinkle Lifting/Firming Serum is a powerhouse option for all skin types (but those with dry skin should be aware this is NOT a hydrating serum).
Just like the previous version of Perfectionist serum, Lauder claims it’s their most effective wrinkle-fighting formula ever (if that's the case, why are they also selling numerous other ultra-pricey antiwrinkle/lifting products in their Re-Nutriv line or La Mer line?) because it begins stimulating collagen production in just two hours. There's no proof of that (Lauder never makes their research available for public scrutiny), but we do know that when skin is protected from sun damage and treated to the ingredients it needs to restore and defend itself, it will make plenty of healthy collagen on its own (skin loves making collagen and would do so in a controlled, manner if we would just stop preventing that from taking place).
It's not as though you can begin using this serum and within weeks your skin will have generated so much collagen that even the deeper, etched wrinkles will be a thing of the past. Besides, if this serum were as adept at generating collagen as claimed that would eventually be to your skin's detriment; too much collagen can result in bumpy skin that doesn't move naturally. Don't forget, excess collagen production is the basis of many scars, including surgical incision scars and deep wounds.
Perfectionist [CP + R] is supposed to blur and smooth lines with its "flexible elastomer," which is a fancy way of saying this serum contains a polymer that works to temporarily fill in superficial lines by forming a flexible, invisible mesh (sort of like a girdle) on your skin's surface. Such technology and ingredients aren't unique to Lauder; you'll find it in similar serums that make firming or lifting claims; however, the effect is always temporary and how long it lasts depends on how expressive you are. Despite some anti-aging claims that still qualify as over-the-top, there's no question that this is a sophisticated formula that does an excellent job of combining and supplying skin with a wide complement of beneficial ingredients. Some of those ingredients can notably improve your skin's appearance, and, yes, reduce the signs of aging, including, to some extent, wrinkles.