Yes, you can use any normal hyaluronic acid product, including SkinCeuticals Hydrating B5 Gel, in conjunction with H.A. Intensifier. We recommend applying H.A. Intensifier first, followed by other hyaluronic acid products. We hope this information helps!

Yes, SkinCeuticals H.A. Intensifier can be used in conjunction with C E Ferulic, and we recommend using both products in your routine for best anti-aging results. When using them together, we recommend applying C E Ferulic first, followed by H.A. Intensifier. We hope this information helps!

Since SkinCeuticals H.A. Intensifier is considered a treatment product, you may find that you need additional moisture depending on your skin type. If you have oilier skin, H.A. Intensifier may provide enough hydration for you, but for drier skin types, we recommend applying an additional moisturizer like SkinCeuticals Triple Lipid Restore 2:4:2 (http://www.lovelyskin.com/o/skinceuticals-triple-lipid-restore-2-4-2). We hope this information helps!

Since SkinCeuticals H.A. Intensifier is considered a treatment product, you may find that you need additional moisture depending on your skin type. If you have oilier skin, H.A. Intensifier may provide enough hydration for you, but for drier skin types, we recommend applying an additional moisturizer like SkinCeuticals Triple Lipid Restore 2:4:2 (http://www.lovelyskin.com/o/skinceuticals-triple-lipid-restore-2-4-2). We hope this information helps!

SkinCeuticals Hyaluronic Acid Intensifier Serum can be used on crow's feet, but should not be applied near the lash line or on eyelids.

SkinMedica recommends the GRASS method to help remember the order in which to apply their products: G - Growth Factor (TNS Essnential Serum) R - Retinol (PM) A - Antioxidants (AM) While not an antioxidant, this is when you apply SkinMedica Lumivive as well (AM/PM) S - Specialty Products (Eye Cream, then Hyaluronic Acid, then moisturizer, etc) S - Sun Protection Following their GRASS method, you would apply your PM products in the following order: 1 SkinMedica TNS Essential Serum 2 Retin A mixed with Obagi NuDerm Blender #5 3 Eye Cream 4 Skinceuticals HA Intensifier

SkinCeuticals C E Ferulic is applied in the am only, just after cleansing and toning the skin. The SkinCeuticals B5 Gel and Hyaluronic Acid Intensifier Serum can be applied either AM or PM. SkinCeuticals B5 Gel: If using in the morning, apply after a SkinCeuticals vitamin C antioxidant serum and before a SkinCeuticals sunscreen. If using with a SkinCeuticals retinol at night, apply after retinol application. SkinCeuticals Hyaluronic Acid Intensifier: If using in the morning, apply after a SkinCeuticals vitamin C antioxidant serum and before SkinCeuticals sunscreen. Apply after retinol application at night.

When used once daily, this SkinCeuticals serum lasts roughly eight to twelve weeks. The entire formula should be used with twelve months after opening the bottle.

Hello. Thank you for your inquiry. Yes, using hyaluronic acid at 25 is a great preventative measure for hydration and preventing premature wrinkles. It draws moisture into the skin, keeping it plump and youthful. Well-hydrated skin helps maintain elasticity and delays the appearance of fine lines. Hyaluronic acid is safe for all skin types and can be used alongside other anti-aging ingredients like retinol or vitamin C. Apply it to damp skin after cleansing and follow up with a moisturizer. Don't forget sunscreen daily to protect against aging.