Slowing down body hair growth is possible through a combination of approaches, from at-home devices and topical treatments to hormonal strategies and dietary changes. No single method stops growth permanently on its own, but layering the right techniques can noticeably reduce how fast and how thick hair grows back after removal.
To understand why some methods work better than others, it helps to know a little about how body hair grows in the first place.
Why Body Hair Grows the Way It Does
Every hair on your body cycles through three phases: a growth phase (anagen), a transition phase, and a resting phase that ends with shedding. The growth phase is what determines how long and thick a hair gets before it falls out. Scalp hair stays in its growth phase for two to eight years, which is why it can grow so long. Eyebrow hair, by contrast, only grows actively for two to three months. Arm and leg hair fall somewhere in between, which is why body hair naturally stays shorter than the hair on your head.
Any method that shortens this growth phase, damages the follicle, or reduces the hormonal signals that stimulate the follicle will slow regrowth. The most effective strategies target one or more of these mechanisms.
Light-Based Devices for Long-Term Reduction
The most dramatic way to slow body hair growth is to damage the follicle directly using light energy. Professional laser treatments and at-home IPL (intense pulsed light) devices both work by targeting the pigment in hair follicles with concentrated light, which heats and weakens them over repeated sessions.
The difference in results is significant. In a study comparing professional diode lasers to home-use devices over six sessions, the professional laser reduced hair density by 85 to 88%, while the home device achieved roughly 46 to 52% reduction. That means a home IPL device can cut your hair growth roughly in half, which for many people is enough to make maintenance far easier. Professional treatments get you closer to near-complete reduction but cost considerably more.
Both approaches require multiple sessions because the light only affects follicles that are actively in their growth phase during treatment. Since body hair follicles cycle at different times, you need several rounds spaced weeks apart to catch them all. A typical protocol runs six to eight sessions. These devices work best on darker hair against lighter skin, though newer models have expanded the range of skin tones they can treat effectively.
Topical Treatments That Slow Regrowth
If you’re looking for something you can apply to your skin rather than investing in a device, a few topical options have clinical backing.
The most well-studied is a prescription cream containing eflornithine, which works by permanently blocking an enzyme called ornithine decarboxylase. This enzyme drives the production of compounds that hair follicles need to grow and multiply. Without it, follicles slow down considerably. In clinical trials, 58% of people using eflornithine showed visible improvement compared to a placebo, and 32% were rated as clear successes by their physicians. The cream doesn’t remove hair on its own. You still need to shave, wax, or use another removal method, but regrowth comes in slower and finer. Results typically appear after six to eight weeks of twice-daily application, and hair returns to its normal growth rate within a couple of months if you stop using it.
Over-the-counter options are less proven but worth knowing about. Some body lotions and post-shave sprays contain plant-based compounds like soy extracts, pumpkin seed extract, or saw palmetto that are marketed as hair growth inhibitors. Lab studies have shown that combinations of certain botanical extracts (particularly from gymnema sylvestre and a plant molecule called chelidonine) can reduce cell proliferation in hair follicles in a synergistic, dose-dependent way. However, the leap from lab results to noticeable effects on your legs or arms is a big one, and standalone clinical trials on these topical products for body hair are limited.
Hormonal and Prescription Approaches
For people whose excess body hair is driven by higher-than-typical levels of androgens (the hormones that stimulate thicker, darker hair growth), addressing the hormonal root cause can make a real difference. This is especially relevant for people with polycystic ovary syndrome (PCOS) or other conditions that elevate testosterone.
Spironolactone is one of the most commonly prescribed options. Originally a blood pressure medication, it blocks the effects of androgens on hair follicles. Doses in clinical studies have ranged from 25 to 200 mg daily, and results take time. Research consistently shows that 12 months of treatment produces significantly better outcomes than six months, so patience is essential. This is a prescription medication with real side effects, so it’s only appropriate when a healthcare provider has identified a hormonal component to your hair growth.
For people with PCOS specifically, combination oral contraceptive pills are often used alongside other treatments to regulate hormones and reduce androgen levels, which over several months can lead to noticeably thinner and slower-growing body hair.
Dietary and Supplement Strategies
What you eat and drink can modestly influence the hormonal environment that drives hair growth, particularly if androgens are part of the picture.
Spearmint Tea
In a randomized controlled trial, women with PCOS who drank spearmint tea twice daily for 30 days experienced significant reductions in both free and total testosterone levels. The effect was measurable within a single month. Spearmint won’t transform your hair growth on its own, but as a simple, low-risk addition to your routine, two cups a day may help take the edge off hormonally driven growth over time.
Saw Palmetto
Saw palmetto is a botanical extract that blocks the enzyme responsible for converting testosterone into its more potent form, dihydrotestosterone (DHT). It reduces DHT’s ability to bind to receptors by nearly 50%. Most clinical research has focused on scalp hair rather than body hair, but the mechanism is the same: less DHT activity means less stimulation of hair follicles. In studies on hair, 60% of participants in the saw palmetto group reported improvement in hair quality, and the extract stabilized progression in over half of participants. It’s available as an oral supplement or as an ingredient in topical products.
Soy and Phytoestrogens
Soy contains isoflavones, a class of plant compounds that can inhibit the same enzyme saw palmetto targets. Research suggests these phytoestrogens can help modulate androgen metabolism, particularly in people who also have insulin resistance, a common co-factor in excess hair growth. Incorporating soy foods into your diet is unlikely to produce dramatic changes on its own, but it fits into a broader “multimodal” approach that researchers have identified as more effective than any single intervention.
Hair Removal Methods That Slow Regrowth
Not all hair removal is equal when it comes to how quickly regrowth appears. Shaving cuts hair at the surface, so stubble returns within a day or two. Methods that pull hair from the root give you a longer window.
Waxing and epilating remove the entire hair shaft, meaning new growth has to start from scratch inside the follicle. This typically buys you two to four weeks before regrowth becomes noticeable. Over time, repeated waxing can weaken some follicles, making regrowth progressively finer and sparser for certain people.
Sugaring works similarly to waxing but pulls hair in the direction of growth, which some people find causes less breakage and slightly longer-lasting results. Threading is another root-removal option for smaller areas like the face.
Combining any of these removal methods with a topical growth inhibitor like eflornithine cream or a plant-based post-hair-removal product can extend the smooth window further, since the topical works on the follicle while the new hair is still forming beneath the skin.
Putting It All Together
The most effective approach layers multiple strategies rather than relying on one. A practical combination might look like this: use a light-based device (professional or at-home) to reduce overall hair density, apply a topical growth inhibitor between sessions, and if hormones are a contributing factor, address that through dietary changes, supplements, or prescription treatment. Each layer compounds the effect of the others.
Timeline expectations matter. Light-based devices show major results after three to six sessions spread over several months. Prescription topicals need six to eight weeks. Hormonal treatments often require six to twelve months before the full effect on hair growth is visible. The strategies that slow growth most dramatically are the ones that require the most patience upfront, but once you’ve reached a maintenance phase, the daily effort drops significantly.