Why do nails feel thin after the removal of a nail coating?

Pregunta: Why do nails feel thin after the removal of a nail coating, compared to how they were before? This is not specific to my work, but everyone I know (myself included) who has had their nails done (by many different techs) has said, when they have an enhancement taken off, their nails are so thin. Surely this can’t only be due to overfiling? As that would mean every nail tech that people in my life have been to have been doing it wrong? I myself am so gentle with people’s nails, and I etch the absolute minimum as I don’t want to cause damage but, when a nail service is taken off, nails are still thinner. Is this due to a lack of sun? Or because they’re not being hardened by touch/impact? 

Respuesta: Good question! I cannot support this with any factual evidence so it must be considered an ‘opinion’.

As you state, this can happen when there has been no thinning of the nail plate through buffing. In my opinion, you need to think about how difficult it is for molecules to pass through coatings, especially with enhancements (as opposed to a thin coating of UV gel polish).
This works in both directions, both down through the coating, and upwards from the nail plate. The nail bed ‘feeds’ the nail plate with oils and moisture to keep it flexible and healthy.

Cuando hay un recubrimiento, en gran parte oclusivo, en la placa de la uña, muchos de estos quedan atrapados en lugar de evaporarse o eliminarse con el lavado de manos, etc. Una placa ungueal con un exceso de aceites y humedad se sentirá débil y muy flexible. Si se dejan al descubierto durante unas 48 horas, el exceso desaparecerá y las placas de las uñas volverán a su estado natural, y no se sentirán débiles y flexibles.

I do not think the nail plate is thinned. It stays the same thickness but is just more flexible. If enhancements are reapplied, it won’t get the opportunity to “dry out”. I don’t see this as a problem.