Your skin is a complex organ. Explore its layers and how each functions, from the epidermis to the subcutis. Learn key tips for healthy skin and the roles of collagen, elastin, and keratin.

We spoke with experts to create a step-by-step guide on how to build a proper skin care routine. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ...

Skin Layers. The skin is made up of layers. It consists of a thin outer layer (epidermis), a thicker middle layer (dermis), and the inner layer (subcutaneous tissue or hypodermis).

The stratum corneum is the top layer of your epidermis (skin). It protects your body from the environment and is constructed in a brick-and-mortar fashion to keep out bacterial and toxins.

Experts reveal how to correctly LAYER your products to get the most out of your routine... and the changes you should make to ensure your skin stays hydrated in winter e-mail 106 ...

Layer your skincare products from thinnest to thickest consistency. This order allows your skin to absorb more active ingredients.

Beauty Pie founder, Marcia Kilgore, shares the definitive guide to which order everything from hyaluronic acid to vitamin C and retinol go on the skin. Skip to main content Search ...

The lightest-to-heaviest rule worked when skin care was simpler. In 2025, there are some new things to think about when you’re layering products.