Cnidaria are diploblastic animals; in other words, they have two main cell layers, while more complex animals are triploblasts having three main layers. The two main cell layers of cnidarians form epithelia that are mostly one cell thick, and are attached to a fibrous basement membrane, which they secrete.
Castor oil is known to help keep split ends under control when used as a conditioning treatment. This is due to the many nutrients contained in castor oil, including vitamin E, omega-6 fatty acids, and essential amino acids that can help to penetrate dry and damaged hair.
1 In case you donât have a cotton swab, you can use a thick cotton cloth. 2  Apply it directly onto the eyebrows. 3  Make use of the dry end of Cotton swab to get rid off any excess oil which may be present around the eyebrows.  You may also use a bit of glycerin on each eyebrows to improve the effectiveness of castor oil.