Abruptly stopping its use could lead to a more noticeable increase in hair shedding compared to shorter-term use.
Rosemary oil is highly concentrated. Using too much of it may damage the hair follicles, causing hair loss instead of hair growth. Anyone with a skin condition or skin sensitivity should use caution when using essential oils. They can cause allergic reactions or worsen symptoms of skin conditions.
Rosemary oil is a powerful antioxidant and can be used to treat many skin conditions, such as eczema, psoriasis and acne. However it has also been known to cause damage to your scalp and follicles if used incorrectly. Rosemary oil can cause inflammation which can lead to hair loss in some cases.
Studies have shown that rosemary oil can improve hair count with just three months of daily application [2]. It doesn't work overnight so you'll need to apply rosemary oil to your scalp consistently to see results.
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.
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.
Detox or Shedding Phase
However, this shedding should subside within a few weeks if the rosemary oil is being used correctly.
Although rosemary oil is not harmful, James warns against leaving it in hair overnight. “Leaving any kind of oil on the scalp for a prolonged period of time will upset the microflora of the scalp,” she says. “This can cause itchiness and redness, and it applies to all oils—not just rosemary oil.”
Studies have shown that rosemary oil for hair has promising positive effects for people with male pattern baldness and alopecia areata [1-3]. In one study, 38% of men saw increases in hair growth after using rosemary oil for male pattern baldness after six months, while 100% of people saw decreased hair loss [1].
Rosemary Essential Oil is a natural way to prevent graying of hair as it also darkens the hair that has already turned gray. Be rest assured to have a smooth experience, without any irritation on the scalp after the use of this essential oil.
There are many ways in which you can use rosemary to increase your hair growth. You must use rosemary oil at least two to three times a week for great results. You can even apply it more times if your routine allows you to.
Leaving in the hair oil overnight on your scalp can cause clogged hair follicles, which can lead to hair loss, so be aware of that. (For some, it might work to leave it overnight, it's about finding out what works best for you!)
This medication must be used on a regular basis for your hair to regrow. It may take 2 to 4 months of regular use before you notice any improvement. It is important to continue to use this product to maintain regrowth of hair. Once you stop using it, the regrown hair will usually fall out within 3 months.
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.
"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.
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.
Potential Drawbacks: Nighttime oiling may lead to oily bedding and could clog pores on the scalp, potentially causing acne. It's important to use the right amount and type of oil to avoid these issues, especially for those with oily scalps. Personalization is Key: Not everyone will benefit from nighttime hair oiling.
Rosemary hair growth oil is quite effective in curbing hair loss and promoting blood circulation in the scalp, which helps improve hair growth. However, it should never be used in a concentrated form but should be diluted using Coconut Oil or any other hair oil that suits your hair to offer better results.
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.
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.
Does Rosemary Oil Thicken Hair? The short answer is yes. There is some scientific evidence that rubbing rosemary oil into the scalp can help hair growth. One rosemary for hair growth study showed that rosemary oil was as effective as minoxidil at stimulating hair growth.