Tips to to get thick eyebrows using these natural products . 1)Applying castor oil on eyebrows really helps in making eyebrows thick. Use Castor Oil before going to bed & Leave it overnight. 2)Applying Vaseline around eyebrows can moisturize the area and helping in thickening of eyebrows. Use Vaseline twice or thrice a day!! 3)Apply lukewarm coconut oil on your eyebrows and leave it over night. Coconut oil helps in inducing hair growth. 4)Applying almond Oil (Via Vitamin E) on your eyebrows daily will add volume to them. 5)Massaging olive oil on your brows on a regular basis gives fuller and thicker eyebrows