MAVALA MAVA-FLEX nail serum. Serum for very dry, too hard and brittle nails that are frequently exposed to external drying factors, such as chemicals, water, sun, or internal factors, such as age, diet or hereditary tendency. It is formulated with a concentrate of urea, calcium, lemon essential oil and vitamin B5, which penetrates the nail to hydrate and fortify it. The result is healthy, flexible, shiny and smooth nails that will stop breaking. Apply on the entire nail, after removing any remaining enamel or dirt and before starting your manicure. It is also recommended to use it twice a week before going to bed to act throughout the night.