Penetrates the skin's keratin layer. Moisturizer If you've tried product after product for your dry or sensitive skin, it's time for Pen-Kera. PENetrates the skin's KERAtin layer. Provides natural moisturizing ingredients. Protects by locking in moisture. Dye-free, lanolin-free, fragrance-free. Pen-Kera restores your skin's natural ability to hold moisture by bonding with tissue, soothing and nourishing dry, flaky skin. Pen-Kera won't clog pores, is gentle to sensitive skin, and is non-greasy - can be used under make-up and sunscreens.