Hair follicles typically grow back within one to two months as long as your scalp does not need to recover from damage. If your hair follicles are damaged, it can take up to four years until they are able to regrow hair normally unless it is permanent, in which case no new strands will grow.
For most people, the most obvious sign of hair follicle damage is hair loss. As your follicles become damaged, they may stop growing new hairs, resulting in a receding hairline, bald spot at your crown (the area at the top of your head) or diffuse thinning.
There are many ways to repair damaged hair follicles naturally. Adding iron, B vitamins (particularly B6), omega-3 fatty acids, vitamin E, and zinc into your diet can help to repair damaged hair strands. Scalp massages with essential oils like peppermint or rosemary can keep hair follicles healthy.
It depends. “If a follicle has closed, disappeared, scarred, or not generated a new hair in years, then a new hair wouldn't be able to grow,” Fusco says. But if the follicle is still intact, yes, it is possible to regrow the hair—or to improve the health of the existing thinner hairs.
Biotin. Biotin, also known as vitamin B7, is a complex B vitamin that is often touted for having hair growth benefits. And some of that hype may actually be worth it. Biotin has functions in “creating red blood cells, which carry oxygen and nutrients to the scalp and hair follicles,” says Dr.
To promote hair growth, you need to increase your protein intake, especially by consuming food like fish, beans, nuts, and whole grains. Hair follicles are mostly made of protein, and the lack of it promotes hair loss. Proteins 'feed' the hair from the inside.
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.
"Short hairstyles are best for thinning hair, because too much length can drag the hair down and create an unflattering, stringy appearance," says Alabama stylist Hope Russo.
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.
Effective treatments for some types of hair loss are available. You might be able to reverse hair loss, or at least slow it. With some conditions, such as patchy hair loss (alopecia areata), hair may regrow without treatment within a year. Treatments for hair loss include medications and surgery.
Using products that are designed to nourish the scalp and hair can definitely speed up this process, but on average you'd be looking at six months to a year to fully see a difference in your hair's condition.
You can't change the number of hair follicles you have. Hair transplantation surgeries may help cover patchy areas of hair growth, but if you were born with low hair density, there's currently no way to change that. You can help maximize your hair density potential by eating a healthy diet.
But even though some of your hair follicles may eventually go dormant and stop producing new hairs altogether, these sleeping follicles are not a lost cause. Regular scalp massages and topical hair products with the right stimulating ingredients can effectively wake them up and trigger hair production again.
Studies show that heat causes hair follicle damage. Chemicals, however, can destroy them and cause permanent damage. Reducing the usage of heating tools and chemicals will significantly reduce damage simply by not drying your hair at higher temperatures or using mild hair coloring ingredients.
Telogen effluvium is generally reversible. A person with this condition does not lose all their hair, although it may become noticeably thin. Telogen effluvium is a form of hair loss characterized by hair thinning or an increase in hair shedding.
Can Alopecia Be Reversed? Whether your hair loss is caused by hormones or an autoimmune disorder, regrowing your hair by using new medications and modifying your diet can be possible as long as you start treatment early.
"Sudden thinning hair can be a symptom of anemia (low red blood cell count), hormonal issues especially related to events like pregnancy, or a thyroid disorder, which are all very common in women," says Dr. Peredo.
The bottom line. There's no strong evidence to support using biotin for hair growth or to prevent hair loss in people without a deficiency. Because hair thinning and poor hair growth are sometimes associated with a biotin deficiency, correcting a deficiency can help restore hair growth in some people.
Whilst thinning hair caused by Male Pattern Baldness will not 'get thicker' again of its own accord, where Telogen Effluvium is the only issue, normal hair growth can resume without intervention so the hair should return to its previous density within approximately six months.
If you are experiencing thinning or balding, our Bosley experts recommend washing no more than three times a week.