Here's why:
* Nails are not living structures: The visible part of your nail (the nail plate) is made of dead, keratinized cells, similar to hair. They don't have metabolic processes like breathing.
* Nutrients and oxygen come from the bloodstream: Your nails receive nutrients and oxygen from the blood supply in the nail matrix (located under the skin at the base of the nail), not from the air.
* Polish is permeable: Nail polish is not completely impermeable to air and moisture. Some air and moisture can still pass through.
However, continuous use of nail polish, especially with harsh chemicals like formaldehyde or toluene, or improper removal (such as picking off the polish), can lead to nail damage, such as:
* Dryness: Polish and polish removers can dry out the nail plate.
* Weakening: The nail plate can become thin and brittle.
* Staining: Darker polishes can sometimes stain the nail.
Recommendations:
* Use a base coat: Applying a base coat before nail polish can help protect the nail from staining and potential damage.
* Moisturize nails: Regularly moisturize your nails and cuticles with a nail oil or cream.
* Take breaks from polish: Allowing your nails to be polish-free for a few days or weeks can help them rehydrate and recover.
* Use gentle polish remover: Opt for acetone-free polish removers or removers containing moisturizing ingredients.
* Avoid picking at polish: Remove polish properly to avoid damaging the nail plate.