Castor hair oil, specifically Jamaican black castor oil (JBCO), is the best option for restoring damaged edges. A daily or weekly (depending on the severity of your need for edge regrowth) deep temple massage with the oil will greatly improve circulation and stimulation of the hair follicle.
Since hair only grows about ½ inch per month at maximum, it can take at least three months to regrow your edges.
What is this? So, depending on the severity and cause of your hair loss, you should start to see new growth within six or eight weeks. However, it may take up to three months for your edges to grow back completely.
Excessive styling and bad styling habits can cause strain on your edges, thinning them over the course of time. Other reasons for hair loss (at the edges and beyond) can include pregnancy, stress, heredity, hypothyroidism, chronic illnesses like lupus, and scalp conditions, according to Prevention.
Massage edges with natural oils to keep moisturized and stimulate growth. The oils themselves stimulate growth and protect and strengthen your hair, and massaging your scalp also stimulates blood circulation and promotes growth.
Thinning edges are a result of one or two things: genetics, or the constant application of tension styling. You can't control genetics, but you can certainly control aggressive styling, or any do that pulls your strands too tight and too far from where they naturally fall.
Whether you're noticing patches of thinning or your hairline is completely bald, the first thing you should always do is see a board-certified dermatologist who can assess your scalp, give you a proper diagnosis, and start an effective treatment plan.
The tl;dr: no. "Castor oil will not grow hair," says Perry Romanowski, a cosmetic chemist and the author of Beginning Cosmetic Chemistry. "There is no evidence for it and no scientific theory supporting that it would work. So yes, it's a total myth."
Based on my experience, using castor oil for edges can serve as an aid in hair growth. As your hair grows, the oil nourishes the strands and your scalp, creating the perfect environment for healthy hair growth. The oil contains fatty acids which can help with strengthening and building the keratin in your hair.
The bottom line
This can help prevent a dry, flaky scalp and dandruff, as well as split ends and hair breakage. For these reasons, coconut oil might make your hair look shinier, stronger, and longer. However, there's not yet evidence that coconut oil can make your hair grow faster or longer.
Regularly performed scalp massage may help you grow thicker, healthier hair, research from 2016 suggests. Increased blood circulation at the site of your hairline could be why scalp massage works to stimulate hair follicles. Try massaging your scalp manually for at least 4 minutes each day.
Yes. In many cases, receding hairline is indeed reversible. The right treatment for you depends on the cause. “For androgenic alopecia, minoxidil (Rogaine) is the only FDA-approved medical treatment for both men and women,” Krejci says.
Here's the hard truth: Little can be done to permanently change the diameter of individual hair strands. Thickening products can do wonders to temporarily plump hair strands, but when it comes down to it, fine hair is genetic and can't be changed.
Lifestyle factors could include using certain hair products, wearing your hair up too tightly, experiencing high stress levels, or not getting enough of certain vitamins and minerals in your diet. People who have immune system deficiencies could also have thinning hair.
Unfortunately, male and female pattern baldness is not reversible without surgical intervention. However, if detected early enough, certain medications, such as minoxidil, finasteride, and Dutasteride can help halt the progression of thinning hair.