What's the difference between propylene glycol, polyethylene glycol?

The "ol" on the ends. Means that both compounds are alcohols. Polyethylene glycol is found in polyesters and propylene glycol is an organic alcohol found in some cosmetics.

Related Questions

My doc gave me normo tears drop comp : polyethylene glycol 400 nf, propylene glycol ip for removing the foreign body from the eyes. Will it helpful?

Maybe not. This is a good lubricating drop and may make your eye more comfortable. But it will not loosen an embedded foreign body. If it does not wash out overnight, see an ophthalmologist for removal. Read more...
Maybe. If the foreign body is not embedded inthe cornea they could be helpful. If the foreign body is embedded you will need to see ophthalmologist for removal. Read more...