Castor oil is viscous, thick oil. It can be a bit tacky and harder to spread than other oils, but this quality also helps it to create a barrier that holds in moisture and keeps microbes out.

For healthy scalp: apply castor oil to the pads of the fingers and massage into the scalp, or use a dropper or applicator bottle to apply. Focus on the hairline if you have thinning. It’s important to use very gentle pressure to avoid scalp irritation or hair breakage.

For thicker hair: apply the oil to damp or dry hair starting from the ends and moving toward the scalp. I like to do this right before bed so that the warmth from my scarf or bonnet helps the oil to soften my hair and smooth flyaways. Wear a shower cap to intensify the warmth. Cover your pillowcase with a towel to protect it from oil stains.

For thicker eyebrows and eyelashes: many people use castor oil to thicken and grow eyelashes and eyebrows. Use your fingers or a spoolie to apply the oil once or twice a day, being careful not to get it in your eyes.

For skin care: many people use castor oil for the oil cleansing method (OCM), although others find that it clogs their pores (I’ve used the OCM with jojoba oil from time to time with good results). To hydrate and reduce the appearance of wrinkles, use the pads of your fingers to pat a small amount of castor oil around your eyes. To improve your cuticles and nails, pat a small amount at the base of each nail. It helps to apply the oil to damp skin to lock the moisture in.