Taking large amounts of rosemary can cause vomiting, sun sensitivity, and skin redness. When applied to the skin: Rosemary oil is possibly safe for most people. It might cause allergic reactions in some people. When inhaled: Rosemary is possibly safe for most people when used as aromatherapy.
Excessive use, especially concentrated forms like essential oils, can lead to side effects, such as: Allergic reactions: Symptoms include skin irritation, itching, redness, or respiratory issues. Gastrointestinal issues: Consumption of large amounts may result in stomach upset, nausea, vomiting, or diarrhoea.
Because it's a pretty potent ingredient, for some, excess use of rosemary oil may lead to some itching and burning, says Holdsworth. “It can cause mild irritation of the scalp and should be discontinued if this is experienced,” adds Dr. Garlapati.
People with high blood pressure, ulcers, Crohn's disease, or ulcerative colitis should not take rosemary. Rosemary oil can be toxic if ingested and should never be taken orally.
While rosemary oil is generally considered safe and effective for promoting hair growth, there is a possibility of increased hair shedding or temporary hair loss after discontinuing its use, particularly if it was used for an extended period.
When using rosemary or products infused with it, initial shedding may occur as the scalp transitions and the hair follicles become more active. This shedding is typically part of the natural process as weaker hairs fall out to make room for stronger, healthier hair.
Clinical studies have shown that some people see results from using rosemary oil in just three months [1]. But it's more likely to take six months or longer. So if you decide to use rosemary oil, you'll need to be persistent and apply it diligently for at least a few months before you see the first signs of regrowth.
The overall result of the study provided evidence that rosemary oil may be effective for certain hair growth. A study from 2022 also found evidence that rosemary oil can aid in hair growth. The study stated that rosemary oil had the same effect as Minoxidil, a hair growth medication, after 6 weeks of use.
Rosemary is a perennial plant (it lives more than 2 years). The leaves are often used in cooking. Possible health benefits include improved concentration, digestion, and brain aging. Very high doses may cause vomiting, coma, and pulmonary edema.
Yes — as long as it doesn't irritate your skin, there's no reason why you can't leave rosemary oil in your hair all day. If you have any irritation or sensitivity, reduce application time.
The Drawbacks of Using Oils for Hair Growth
"A word of caution: Some oils can cause dandruff and when exposed on the face from hair contact, cause acne," says Dr. Kormeili. Castor and coconut oils, for example, can clog your pores, and clogged pores can result in a zit.
Rosemary oil is potent, and while it can offer benefits, it also has the potential to cause skin sensitivity and allergic reactions. Its concentrated nature can lead to irritation, redness, or itching when applied directly to the scalp.
Rosemary Oil: As mentioned previously, rosemary oil is the only oil that is clinically proven to have a significant effect on increasing hair growth, similar to that of minoxidil.
Our results showed significant increases in blood pressure, heart rate, and respiratory rate after rosemary oil inhalation. After the inhalation treatments, subjects were found to have become more active and stated that they felt “fresher”.
Rosemary (Rosmarinus officinalis L.) Glycolic Extract Protects Liver Mitochondria from Oxidative Damage and Prevents Acetaminophen-Induced Hepatotoxicity.
Rosemary oil can be applied directly or mixed with a carrier oil (such as coconut oil) to subdue the potency. With its potent antibacterial qualities, rosemary essential oil helps fight the acne bacteria from getting into your pores.
It's actually a sign that the product is working to stimulate new hair growth. As per studies by PubMed Central, for healthy hair growth, Rosemary is a natural alternative to Minoxidil which is known to have side effects like headaches, irregular heartbeat and scalp irritation.
"There are no great studies to know exactly how long it takes improvement, but usually it will probably take 4-6 weeks to help with hydrating the scalp, and about three months to see results, as it takes time to have hair grow out," says Dr. Kobets.
Castor Oil: Castor Oil is the fast hair oil for hair growth. It is an excellent ingredient for hair nourishment. Enriched with Vitamin E, Antioxidants, Omega 6s, Ricinoleic Acid, Long hair growth oil can be backed for stronger and healthier hair. In addition, use castor oil to calm an itchy and irritated scalp.
The most common side effects of topical minoxidil application are redness and irritation of the skin. Rarely, patients have reported headaches, palpitations, and dizziness. Oral minoxidil side effects include palpitations, dizziness, low blood pressure, chest pain, headaches, and swelling of the legs.
Yes, you can leave rosemary oil in your hair overnight to reap the benefits while getting some well-deserved rest. However, it is important not to leave directly-applied rosemary oil on the hair overnight, as this can cause irritation. Only ever use diluted rosemary oil or products infused with rosemary oil.
Not only that, rosemary oil is said to potentially reduce the appearance of grey hairs, as it has an effect on the pigmentation of hair.