Homemade carrot oil is a simple infusion of grated carrots in a carrier oil, designed to extract beta-carotene and other fat-soluble nutrients into a form you can apply directly to your scalp and hair. The process takes about two hours on the stovetop or up to two weeks with a cold infusion method, and the result is a golden-orange oil rich in the plant pigments that give carrots their color.
Why Carrots May Support Hair Growth
The connection between carrots and hair comes down to beta-carotene, which your body converts into vitamin A. Vitamin A plays a direct role in the hair growth cycle. It regulates hair follicle stem cells, influencing when follicles enter their active growth phase (anagen) and when they transition into their resting phase. A deficiency in vitamin A leads to a condition called follicular hyperkeratosis, where keratin builds up around hair follicles and blocks normal growth.
There’s an important nuance here, though. Research published in the journal Nutrients found that vitamin A acts on hair follicles with a U-shaped dose response. Too little causes problems, and too much does too. Excess vitamin A can actually trigger hair loss and reduce the oil production your scalp needs to stay healthy. A topical carrot oil infusion delivers far less vitamin A than oral supplements, which makes it a gentler approach, but it also means the effects are more subtle.
Beyond beta-carotene, carrot oil provides antioxidant compounds that may help protect hair from environmental damage and support a healthier scalp environment overall.
Stovetop Method (2 Hours)
This is the fastest and most popular approach. You’ll need two to three large carrots and about one cup of a carrier oil. Coconut oil, olive oil, and grapeseed oil all work well. Coconut oil penetrates the hair shaft more effectively than most plant oils, while olive oil is heavier and better suited for thick or coarse hair. Grapeseed oil is lightweight and a good choice if your hair tends toward oily.
Start by washing and peeling the carrots, then grate them finely. Finer pieces expose more surface area, which means more beta-carotene transfers into the oil. Place the grated carrot in a heat-safe glass jar or the top of a double boiler, and pour the carrier oil over it until the carrot is fully submerged.
Heat the mixture gently using a double boiler setup: place the jar or pot inside a larger pot filled with a few inches of water, then bring the water to a low simmer. Keep the temperature low. You want warmth, not frying. Let it infuse for about two hours, stirring occasionally. The oil will gradually take on a deep orange-gold color as the beta-carotene dissolves into it.
Once it has cooled enough to handle, strain the mixture through cheesecloth or a fine mesh strainer into a clean glass jar. Squeeze the cheesecloth to extract as much oil as possible from the carrot pulp. Discard the pulp.
Cold Infusion Method (1 to 2 Weeks)
If you want to skip the stove entirely, you can let sunlight do the work. Grate two to three carrots into a clean glass jar, cover them completely with your carrier oil of choice, and seal the jar tightly. Place it in a sunny windowsill and let it sit for one to two weeks, shaking the jar once a day to redistribute the carrot pieces.
The cold method preserves more heat-sensitive compounds, but it takes patience and carries a slightly higher risk of the carrot pieces going rancid before the infusion is complete. If you notice any off smells or mold during the process, discard the batch and start over. Using fully dried grated carrot (spread on a baking sheet and dried in a low oven for a couple hours) significantly reduces this risk, since removing moisture limits bacterial growth.
Storage and Shelf Life
Homemade carrot oil keeps for roughly three months at room temperature when stored in a dark glass bottle away from direct sunlight and heat. Research on carrot seed oil formulations found that carrot-based oil preparations remained stable for 90 days with no changes in color, odor, or separation.
To extend the life of your oil and slow oxidation, add a small amount of natural antioxidant. A few drops of vitamin E oil (sold as liquid capsules at most pharmacies) works well. Rosemary extract is another option. Either one helps prevent the oil from going rancid before you’ve used it up. Store your finished oil in the refrigerator if your home runs warm, especially during summer months.
How to Apply Carrot Oil to Your Scalp
For a standard scalp treatment, warm one to two tablespoons of your homemade carrot oil between your palms and work it into your scalp using your fingertips. Massage in small circular motions for three to five minutes. The massage itself increases blood flow to the follicles, which supports nutrient delivery independent of whatever oil you’re using. After massaging the scalp, comb the remaining oil through the lengths of your hair.
Cover your hair with a plastic cap or an old towel and leave the oil on for at least one hour. Two hours gives more time for absorption. Some people leave it on overnight, though this can stain pillowcases even through a cap, so use something you don’t mind discoloring. Shampoo the oil out thoroughly. You may need to lather twice, especially if you used coconut oil as your base.
Aim for two applications per week. Consistency matters more than quantity here. A small amount massaged in well will do more than drenching your hair once a month.
Adding Essential Oils for Extra Benefits
Your homemade carrot oil works as a standalone treatment, but you can boost it by blending in a few drops of essential oils that have stronger evidence for hair growth. Rosemary essential oil is one of the most studied options, with clinical research comparing it favorably to conventional hair loss treatments over six months. Peppermint oil increases blood circulation to the scalp when applied topically.
If you go this route, add three to four drops of essential oil per two tablespoons of your carrot oil. Essential oils are concentrated and can irritate the scalp if used undiluted, so this ratio keeps the blend safe for direct skin contact. Do a patch test on the inside of your wrist before applying any new essential oil blend to your scalp. Wait 24 hours and check for redness or itching.
What Carrot Oil Can and Can’t Do
Carrot oil is a conditioning treatment that delivers antioxidants and vitamin A precursors to your scalp. It can improve scalp health, reduce dryness, add shine, and create a better environment for hair to grow. What it won’t do is reverse genetic hair loss or regrow hair in areas where follicles have already gone dormant permanently.
If your hair thinning is caused by a dry, irritated scalp, nutritional gaps, or general breakage, a consistent carrot oil routine is a reasonable and low-risk approach. If you’re experiencing sudden or patchy hair loss, that points to something carrot oil alone won’t address.