DHT and Hair Loss: What's Different for Men and Women

If you've ever searched for answers about hair thinning or shedding, chances are you've come across the term DHT. It gets blamed for a lot, and honestly, it deserves some of that blame. But here's what most articles miss: DHT doesn't affect men and women the same way. The patterns are different, the timelines are different, and the solutions need to be different too.

Let's break it all down.

What Is DHT?

DHT stands for dihydrotestosterone. It's a hormone derived from testosterone through an enzyme called 5-alpha reductase. Both men and women produce testosterone, which means both men and women produce DHT. The difference is in how much, and how sensitive your hair follicles are to it.

DHT binds to receptors in hair follicles and, over time, causes them to shrink. This process is called follicle miniaturization. As follicles shrink, the hairs they produce become finer, shorter, and eventually stop growing altogether. This is the root mechanism behind androgenetic alopecia, the most common form of hair loss in both sexes.

How DHT Affects Men

In men, DHT levels are significantly higher because testosterone levels are higher overall. Men also tend to have more androgen receptors in their scalp follicles, particularly at the hairline and crown, which is why male pattern baldness follows such a predictable path.

The classic progression moves from a receding hairline at the temples, to thinning at the crown, and eventually to full or near-full baldness across the top of the scalp. This is measured using the Norwood Scale, which maps seven stages of male pattern hair loss.

The onset can begin as early as the late teens or early twenties, and the progression can be rapid. Genetics play a major role, but DHT sensitivity is the trigger. Men with high follicle sensitivity to DHT will experience more aggressive loss even if their DHT levels are not unusually elevated.

How DHT Affects Women

Women produce far less testosterone and therefore far less DHT. But that doesn't mean they're immune. Women with androgenetic alopecia experience a different pattern of loss, typically a diffuse thinning across the top and crown of the scalp rather than a receding hairline. The frontal hairline is usually preserved, which is one of the key visual distinctions from male pattern baldness.

This is measured using the Ludwig Scale, which maps three stages of female pattern hair loss.

In women, DHT-related hair loss is often triggered or accelerated by hormonal shifts, including:

• Polycystic ovary syndrome (PCOS), which raises androgen levels
• Menopause, when estrogen drops and androgens become relatively more dominant
• Postpartum hormonal changes
• Stopping hormonal birth control

Because estrogen plays a protective role in hair growth, any reduction in estrogen can make women more vulnerable to DHT's effects, even without a significant rise in DHT itself.

The Key Differences at a Glance

Pattern of loss: Men lose hair at the hairline and crown in a defined pattern. Women experience diffuse thinning across the top of the scalp with the hairline largely intact.

DHT levels: Men have significantly higher DHT levels overall. Women's DHT is lower but follicle sensitivity still varies.

Hormonal triggers: Men's DHT-related loss is more directly tied to genetics and androgen receptor sensitivity. Women's loss is more often influenced by estrogen fluctuations and conditions like PCOS.

Age of onset: Men can begin losing hair in their twenties. Women more commonly notice thinning in their forties and fifties, though it can occur earlier with hormonal conditions.

Rate of progression: Male pattern baldness can progress to complete baldness. Female pattern hair loss rarely results in total baldness but can cause significant thinning.

What Can Be Done?

For both men and women, the most clinically studied DHT-blocking approach involves finasteride (prescription, primarily used in men) and minoxidil (topical, used by both). However, finasteride is generally not recommended for women of childbearing age due to risks.

Beyond clinical treatments, scalp health plays a significant role in how well follicles function. A clean, moisturized, well-nourished scalp creates the best environment for hair to grow. This is where your daily haircare routine matters more than most people realize.

Keeping the scalp free of buildup, maintaining moisture balance, and using products that support follicle health can help slow the visible effects of DHT-related thinning, even if they don't block DHT directly.

The THICK Approach

At THICK, we formulate with scalp and strand health at the center. Our leave-in conditioner is designed to nourish from root to tip, keeping your hair environment as healthy as possible. While no leave-in conditioner blocks DHT, a well-moisturized, low-stress scalp is always going to be more resilient than one that's dry, irritated, or overloaded with product buildup.

If you're noticing thinning, the first step is understanding what's driving it. DHT is often part of the picture, but it's rarely the whole story. Consult a dermatologist or trichologist for a proper assessment, and in the meantime, give your scalp the care it deserves.

Your hair is worth the attention. Start with what you can control.