My favorite is the PCA pHaze 25 ExLinea Peptide Smoothing Serum . Peptides have worked well to minimize fine lines for me in a variety of products. But I prefer serums and finding peptide serums is often more difficult than finding creams. This serum was just what I was seeking. Somewhat moisturizing, it smooths on well and absorbs fairly quickly, allowing for application of your favorite moisturizer or sunscreen over the top. I have been using it morning and evening for some time now and have noticed a change in the appearance of fine lines around my eyes and on my forehead.
PCA's Skin Care Collagen Hydrator is a nice facial moisturizer, suitable for dry, aging skin. This includes shea butter, so it has a pretty good moisture kick. I like it on my upper cheeks when they are feeling particularly dry. I would not recommend this one for oily or acne prone skin, but for those with dry skin or dry and sensitive skin, it is great.
The PCA Skin® Rejuvenating Serum - pHaze 24 is another serum appropriate for aging skin. With vitamins, amino acids, growth factors and osmoprotectants, this serum helps the skin retain moisture. I particularly like the feel of this serum. However, if on a budget and only buying one serum, I would recommend the peptide serum first.
PCA also makes items for treating hyperpigmentation and melasma and I am loving them so far. Watch for my review of a few of those soon.