In this guide
Castor oil is popular in hair care because it is thick and gives ends shine and softness. Evidence that it speeds up hair growth, however, is not convincing. The authors of a case report in a trichology journal note that oils can protect the hair shaft but do not promote growth. So think of a mask as care for dry lengths, not as scalp therapy.
Before your first mask
Castor oil can cause an allergic skin reaction. The American Academy of Dermatology advises testing a new product: apply a small amount twice a day for seven to ten days on the inner arm or the bend of the elbow. If redness, itching or swelling appears, wash it off and stop using it.
How to make and apply the mask
- Mix one part castor oil with two to three parts of a thinner oil, such as jojoba or coconut oil.
- Use only a little, a few drops for medium-length hair, and apply it only to dry ends and lengths.
- The first time, leave the mask on for about half an hour.
- Apply conditioner to the dry, oiled hair, massage it in, and only then wash your hair with shampoo.
- Detangle gently, section by section, with a wide-tooth comb.
Mistakes to avoid and washing afterwards
Pure, undiluted oil over long hair is hard to wash out. A case of sudden, irreversible hair matting after the first use of castor and coconut oil has been described, so do not rub your hair hard while washing. Do not apply the oil near the eyes. If you have an oily scalp, dandruff or seborrhoeic dermatitis, avoid the scalp and see a dermatologist for proper treatment.
For rinsing you need a mild shampoo you already tolerate, applied to the scalp, with conditioner on the lengths. If you are looking for a new shampoo, Aloe Jojoba Shampoo is an optional choice for gently washing hair after an oil mask, but do not mix it with the oil and test it first.
Sources: American Academy of Dermatology International Journal of Trichology (PubMed Central) Forever Living.
Common questions
Does castor oil make hair grow faster?
There is no convincing evidence for that. The oil can make dry ends softer and shinier, and for increased hair loss you should see a dermatologist.
What is the easiest way to wash the oil out?
First massage conditioner into the dry, oiled hair, then wash the scalp with shampoo and rinse gently. Do not rub your hair hard.
Before first use
Choose products for your dietary routine and care needs. Follow a healthcare professional’s advice for diagnosis and treatment of symptoms. Check suitability first during pregnancy and for use by children.


