Yes, using vaseline will treat your blepharitis which will work so effectively. The chemical name of vaseline is glycerol which is very stable. After eating, it will not be digested and absorbed. It has no harm to human. The main characters of it are colorless, tasteless, transparent, jelly form liquid and non-toxic. The oral has a sweet taste which can be dissolved in water. It can keep the skin moisture. The intravenous injection can reduce blood pressure and cranial pressure, passing into the intestinal. That is why it treats your blepharitis which may be caused by the infection. The vaseline will be indeed a very good moisturizing supplies. As we know, people can add the fragrance from the general skin product. Those who are allergic at the skin are appropriate to use the vaseline. Besides the function of making the facial skin moisture, it can also try in the nasal cavity with point vaseline. In addition, it also can help stop bleeding. If you have the blepharitis, you could try the vaseline.