Yes, the castor oil can help your eyelashes grow because of the inner chemical materials. However, most people will use the vitamin E to adopt on the eyelashes part to make it grow. The castor oil can cellulose nitrate ethyl. The cellulose acetate butyrate polyamide DingHua melamine formaldehyde resin rosin shellac and has good intermiscibility which can be used as plasticizer in addition. It has the influence of polyvinyl butyral polyvinyl chloride, polyvinyl acetate and vinyl alcohol copolymer of chlorinated rubber which also have good intermiscibility.The castor oil has good stability in color retention pliability pigment dispersion wettability lubricity characteristics of low temperature electric property and biological characteristics. Therefore, it can be applied to varnish coating with this artificial leather, ink, sealant lubricant, stationery, cosmetics, electrical insulating material, medicine and so on. You could use it as the cosmetics materials to make you look beautiful. But I strongly suggest you to use the vitamin E to adopt on it.