Castor oil is a well known remedy for thick hair growth, hence it can also be used on eyebrows to not only grow them thicker but also healthier. To make your own travel friendly eyebrow/eyelash oil, use your old mascara, you can always re purpose and reuse your makeup items so don’t throw them away.
Wash the old mascara and also the wand thoroughly. Fill in the castor oil in it
Use a small amount of the oil on your eyebrows and eyelashes before going to bed.
The mascara wand makes it easy to apply the oil on the eyebrows and eyelashes, be caution though not to get the oil inside your eyes.
Add few drops of rosemary or lavender essential oil that helps to regrow hair and also stimulate new hair growth. Check if your allergic to any of the essential oils before using it.