Benefits of Castor Oil
The benefits of castor oil come from its unique fatty acid makeup: 89.4% ricinoleic acid, linoleic acid 3.4%, oleic acid 3.2%, palmitic 1.2%, and stearic acid 0.7%. No other oil contains this high ricinoleic acid as the oil from the castor beans.
A search online will show all kinds of hair growth and eyelash growth articles and testimonials. While we make no claim that these are true or false, we do want the reader to know that there is no scientific data to support these claims.
Castor oil demonstrates a number of qualities that could aid in hair growth. Castor oil's ability to reduce bacteria and inflammation alone could provide for a more suitable environment to promote follicular growth.
Benefits of castor oil come from the presence of steroids, saponins, alkaloids, flavonoids, and glycosides. It has also demonstrated high anti-oxidant activity, even at low concentrations, which could be useful in treating diseases originating from oxidative stress.
Animal studies have shown that benefits of castor oil include anti-inflammatory actions. Castor oil has even been studied against capsaicin (a topical pain reliever often used for neuralgia) and has shown remarkable anti-inflammatory results when applied topically. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1781768/
Articles have cited castor oil as being beneficial for those suffering from acne. This is becasue castor oil has shown antimicrobial activity against several organisms. These include Streptococcus progenies, Staphylococcus aureus, Klebsiella pneumonia, and Escherichia coli (the well known E. coli).
It would be of no surprise then, that if castor oil has demonstrated efficacy with regards to inflammation and microbial inhibition, that another benefit of castor oil would be wound healing. As an agent which inhibits lipid per oxidation, castor oil could increase the viability of collagen fibrils by means of strengthening collagen fibres, increased circulation, preventing cell damage and by promoting cell DNA synthesis. Castor oil also contains tannins, triterpenoids, and sesquiterpenes which are known to have astringent and anti-microbial properties that may assist in wound healing. http://www.ijppsjournal.com/Vol4Issue4/4695.pdf
Castor oil is able to penetrate the stratum corneum of your skin. This is because castor oil has a molecular mass low enough to the pass through the skin's barrier.