Gelish Foundation Flex is a soak-off rubber base nail gel that works as a base coat and can also be used to provide volume to uneven nails, conceal discolored nails, or as a ridge-filling base coat. It comes in a variety of shades, including clear, light pink, cover beige, and light nude. Here are some insights from user and expert reviews:
PROS
- Strengthens nails
- Easy to apply
- Long lasting