Olay is a trusted skin care brand that offers a variety of antiaging products. Two poplar lines are Pro-X, an over-the-counter series that claims to give prescription-quality results, and Regenerist, a serious wrinkle fighter. Know your own skin care preferences when purchasing Pro-X or Regenerist products.

Check the labels. When deciding on whether Olay Pro-X or Regenerist products will be right for your antiaging needs, compare ingredients. Active ingredients are noted on the label. Ingredients are listed in order of their amount in the product; ingredients that appear in larger quantities in the product will be listed first.

Know your ingredients. Between both products lines, you'll see retinyl propinate (a vitamin A derivative that encourages skin cell renewal), cyclopentasiloxane (a hydrating silicone), and niacinamide (vitamin B3 complex) listed on the labels. Another component to search for are peptides, which trigger collagen production in the skin. Collagen is a protein naturally found in the skin that provides elasticity and firmness. Collagen decreases as people age, so reintroducing it to the skin can give a more youthful appearance.

Understand how these ingredients work so you have an idea of how they'll affect your skin and address your skin issues.

Assess your personal needs. If you have a few very fine wrinkles, Regenerist may be a more appropriate product. If you have many deep-set wrinkles or creases in your complexion, you may want to try Pro-X.

Decide which products are right for you. Each line offers a variety of different products. Pro-X, as of June 2010, has 12 items in its product line, targeting everything from skin cleansing to wrinkle fighting, and categorizes products by need. For example, they have "primary solutions" and "specialized treatments." Regenerist, as of June 2010, offers 31 products, from anti-aging serums to microdermabrasion and peel kits. It's important to know what results you desire so you can purchase the appropriate products.

Track your skin's appearance. Pro-X guarantees their products, based on clinical trial results and user experiences. Be aware of any changes in your skin. If you're not completely satisfied with your results, call 1-866-511-OLAY for a full refund.