For Debra in Colorado... Why would your natural nails need air?? Nails are dead, waste products of the body and do not require air. Covering does not weaken them either. What weakens nails is ill health, certain drugs and damage to matrix. Weak nails can also be inherited. As for acrylics or gels ruining the nails, it is the bad NAIL TECHNICIAN who put them on that ruins the natural nail, not the product itself!