All those hair loss treatments … they’re everywhere these days. We see them as often as we see offers for GLP-1 agonists. If you’ve ever found yourself staring at the shower drain like it just committed a personal offense, you’re not alone. For all of us who have experienced some (or a lot of) hair loss, those treatment promises are very tempting! After all, hair is tied to identity, beauty, aging, health, and yes, sometimes ego. The tricky part is that “hair loss” is not one thing. It’s a symptom with multiple causes, and the best treatment depends on which cause is affecting your hairline. In many cases, the most popular treatments don’t fix much of anything at all.

First, we have to figure out what kind of hair loss we are experiencing. 

Common Categories of Hair Loss:

Pattern Hair Loss (androgenetic alopecia)
This is the classic gradual thinning over time. In men, it often starts at the temples or crown. In women, it’s often diffuse thinning along the part or top of the scalp. Genetics and hormones are major players. The main culprit in this kind of hair loss is a hormone known as DHT, which is a byproduct of testosterone and is responsible for the development of male gender characteristics, even though women produce it too. DHT binds to hair follicles, causing them to shrink over time. It also shortens the growth phase of hair, leading to thinner, shorter hair strands and, eventually, no growth at all. This is where the concept of the virile bald guy comes from! Lots of DHT = little to no hair.

Shedding (telogen effluvium)
This is a temporary “more hair than usual is falling out” situation, often triggered by a big stressor like illness, surgery, high fever, rapid weight loss, postpartum changes, new medications, major life stress, and more. It usually shows up a couple of months after the trigger, which is why the hair loss can feel like a mystery. Hair typically regrows in 3–6 months once the stressor is managed, but reducing stress via exercise, sleep, and therapies is essential for recovery. Time is the only proven remedy for this type of hair loss.

Autoimmune-Related Hair Loss (alopecia areata)
This often causes patchy hair loss, but it can be more extensive. Like shedding, this kind of hair loss can be triggered by environmental stressors (fever, emotional stress, physical injury) but the mechanism behind the hair loss is different. With alopecia areata, the immune system targets hair follicles, and treatment is different than pattern hair loss. This condition may also be an indication of additional autoimmune issues like thyroid disease, or atopic dermatitis.

Other Issues
There are other causes too (scalp inflammation, fungal infections, traction from tight hairstyles, and scarring conditions), which is why a correct diagnosis matters before you spend money, time, and hope on the wrong fix. Because pattern hair loss is the most common, most promoted remedies are targeted to that condition, but there are only two treatments.

What Actually Works for Pattern Hair Loss

If you only remember one thing, make it this: for pattern hair loss, the only true fully evidence-backed treatments are still minoxidil and finasteride. 

Topical Minoxidil (OTC)
Minoxidil helps some people slow loss and regrow some hair, especially at the crown. It requires consistency, and results are slow. Expect 3 to 6 months for early changes, and closer to 6 to 12 months for a clearer read. Some people notice temporary shedding early on, which is alarming but can be part of the process. 

Oral Finasteride (prescription, FDA approved for men with pattern hair loss)
Finasteride lowers DHT and helps many men stop further loss, with some regrowth for a portion of users. It’s not for everyone, and side effects are possible, so it’s a decision to make with a clinician. 

The Popular “Newer” Options You May Be Hearing About

Low Dose Oral Minoxidil (prescription, off-label)
Dermatologists increasingly use low dose oral minoxidil for some patients who can’t tolerate topical or who want a simpler routine. The evidence base is growing, including randomized trial data, but it’s still off label for hair loss and it is not a DIY medication. It can affect blood pressure and cause swelling or unwanted hair growth, among other side effects, so it needs medical supervision. 

Topical Finasteride (off-label and a warning) 

There are compounded topical finasteride products marketed online. Some popular lifestyle remedy sites are combining compounded topical finasteride with topical minoxidil. The FDA has flagged potential risks and reported adverse events involving compounded topical finasteride, so this is definitely a “talk to a clinician first” category, not a “click, buy, hope” category.

Antiandrogens (prescription)
For some women with hormone-driven pattern thinning, clinicians sometimes use medications that reduce androgen effects (like spironolactone). This is individualized based on health history, pregnancy considerations, and lab context. 

In-Office and Device-Based Treatments (promising but not magic)
Both of these treatments began their lives as treatment for skin issues but are increasingly used for hair loss. 

Low-Level Laser Therapy (“red light” devices)
Some devices have FDA clearance and may provide modest improvement for some people, especially when combined with medication. It’s
usually a “helpful add on,” not a “solo miracle.” You may have seen LED caps for sale. As we have discussed previously (see Does Red Light Therapy Really Work?), there isn’t overwhelming evidence that red light therapy works for skin issues and very little with respect to hair loss. These are probably not harmful, but their efficacy is not backed by strong evidence to date.

Platelet Rich Plasma (PRP)
PRP has supportive evidence for some patients, but results vary and protocols are not standardized. It involves injecting a patient’s own concentrated blood platelets, rich in growth factors into the scalp to stimulate hair follicles, increase density, and reverse thinning. There was a promising pilot study done in 2015, but it hasn’t been widely researched in double blind control group studies. It can be expensive, and you want an experienced clinician if you go this route.

New Treatments for Immune-Related Hair Loss

In 2022, 2023, and 2024 the FDA approved three effective oral prescription drugs to treat immune related hair loss (alopecia areata). They are known as “JAK inhibitors,” and their brand names are almost as difficult as their chemical names. They include baricitinib (Olumiant), ritlecitinib (Litfulo), and deuruxolitinib (Leqselvi). These are prescription medications with important safety considerations, including infection, cardiovascular issues, and cancer. Clearly these remedies should be carefully prescribed and monitored by specialists, but they are real options for the right patients.

Supplements, Diet, and “Hair Vitamins”

Let’s be honest, the supplement aisles and the lifestyle remedy sites know exactly how to market to our insecurities.

Do supplements work?
If you have a true deficiency (iron, for example), correcting it may help. If you do not have a deficiency, mega-dosing vitamins
is expensive and does not magically override genetics or hormones. And sometimes they can get in the way.

Biotin is the classic example.
Biotin deficiency is uncommon, yet biotin supplements are everywhere. High dose biotin can also interfere with certain lab tests, which is not the kind of surprise anyone wants. 

Collagen does not help you regrow hair.
Hair is made of protein, and collagen is the most common protein in our bodies. But there is no clinical evidence that collagen will reverse hair loss. The best we can offer is that if you don’t get enough protein in your diet and you take collagen, it can help mitigate your lack of protein.

Is addressing diet a better idea?
For many people, yes. Overall nutrition matters, especially protein. The goal is not a “hair loss superfood” but adequate protein, iron-rich foods as appropriate, and a generally balanced diet that supports your whole body, not just your hair line. It is common knowledge that all vitamin and nutrition ingested through food are more effective than any supplement.