- Fortifying oil - Body and hair - Hair growth, eyelashes and nails. Castor oil contains ricinoleic acid which helps restore strength to nails, eyelashes and hair, and promote their growth. This oil is also an excellent treatment for repairing damaged skin and restoring its shine. Directions for use: Damaged skin: massage the area until absorbed. Hair: as a mask, apply before shampoo, massage the roots, for more benefits, wrap in a towel and leave on overnight. Ingredients: Ricinus Communis (Castor) seed oil COSMOS ORGANIC certified by Ecocert Greenlife according to the COSMOS standard. 100% of the ingredients are of natural origin, 100% of the total ingredients are from Organic Farming.