The Schick Hydro Silk Sensitive Care Hang-in Shower Refills are dermatologist tested and feature water-activated Hydra-Boost serum formulated with shea butter. This hypoallergenic moisturizing serum is clinically proven to provide lasting hydration* and helps protect your sensitive skin. Schick Hydro Silk Sensitive Care Razor is ergonomically designed with 5 curve-sensing blades to give you incredible closeness, each blade includes unique skin guards to smooth skin and help prevent irritation, while following the natural shape of your body. The cartridge of the Schick Hydro Silk Sensitive Care razor is just the right size for accessing hard-to-reach areas, including underarms and bikini. *Moisturizes up to 2 hours after shaving.