Does Cutting Hair Make It Grow Thicker & Faster?
BY TRYBELLO
Jul 9, 2025
Key Takeaways
- Cutting your hair doesn't actually make it grow thicker or faster; this is a common myth not supported by scientific evidence.
- Hair growth happens at the follicle level in your scalp, not at the ends where cutting takes place.
- Regular trimming creates the illusion of thicker hair by eliminating tapered, damaged ends and creating blunt ends.
- While trimming doesn't speed up growth, it does prevent breakage and split ends, helping you retain length over time.
- Trybello's Hair Helper Spray targets the actual source by nourishing follicles with biotin, castor oil, and caffeine to stimulate natural growth from the roots, delivering visible results in just 4 weeks.
Understanding The Biology of Hair Growth
We've all heard it: cutting your hair will make it grow back thicker and faster. It's one of those beauty myths that's been passed down through generations, often shared by well-meaning family members or friends.
The truth is, cutting your hair doesn't physically alter the rate of growth or the thickness of individual hair strands. But there's much more to this, and understanding the science behind hair growth can help you make better decisions for your hair health journey.
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Hair Growth Phases
Your hair follows a predictable growth cycle with four main phases (image courtesy of Healthline).
The anagen (growth) phase is when active growth occurs, lasting 2–7 years for scalp hair. Next comes the catagen (transition) phase, a short 2–3 week period where the hair follicle shrinks.
Finally, there's the telogen (resting) phase lasting about 3 months, after which the hair sheds in the exogen phase to make way for new growth.
This cycle explains why your hair grows to a certain length and then seems to stop. Different follicles are in different phases at any given time.
What Controls Growth Rate
Hormones play a significant role in hair growth that's why pregnancy often leads to thicker, faster-growing hair, while hormonal imbalances can cause thinning. Nutrition is another crucial factor, with protein, iron, vitamins, and minerals all supporting healthy hair production.
Age impacts growth too, with most people experiencing slower growth and finer hair as they get older. And of course, there's overall health; illness, stress, and medications can all influence how quickly your hair grows.
These biological factors operate beneath the surface where cutting has no impact.
Genetic Factors
Perhaps the most important determinant of your hair's thickness and growth rate is your genetic makeup. The genes you inherit from your parents largely determine your hair density, strand thickness, growth rate, and even how long your anagen phase lasts.
This explains why some people naturally grow hair quickly to great lengths while others have slower growth with a shorter maximum length.
Why Cutting Doesn't Increase Growth Speed
Growth Happens at the Follicle
Think of your hair like a plant growing from the ground. Trimming the top of a plant doesn't make the roots grow faster, and similarly, cutting your hair doesn't cause the follicles to speed up production.
The follicles in your scalp operate on their own biological timeline, completely unaware that you've visited the salon. Your hair's growth rate is determined by factors like genetics, age, overall health, and hormonal balance, none of which are influenced by cutting.
Scientific Evidence
There is no scientific evidence that shows cutting hair has a physiological effect on growth rate or thickness. The average person's hair grows about half an inch per month regardless of whether they've recently had a haircut.
This growth rate remains remarkably consistent over time unless affected by health issues, nutritional deficiencies, or hormonal changes.
The Thickness Illusion
If cutting doesn't make hair grow thicker, why does this myth persist? The answer lies in the illusion created by freshly cut hair.
Blunt Ends Effect
When you cut your hair, you create a blunt end where the hair shaft is at its full width. This sudden ending at the thickest part of the hair strand creates the visual impression of overall thicker hair. It's not that the hair has actually grown thicker; rather, you've removed the thinner, tapered ends.
The contrast between your previously wispy ends and new blunt cut makes your hair appear thicker and healthier immediately after cutting, reinforcing the myth that cutting somehow changed the hair's growth pattern.
Why New Growth Appears Thicker
Virgin hair that hasn't been exposed to environmental damage, heat styling, or chemical treatments naturally feels stronger and looks healthier than older hair. When people notice this difference between new growth and their damaged ends, they often attribute it to cutting, rather than recognizing it as the natural difference between newer and older hair.
Additionally, shorter hair has more volume and bounce simply because it has less weight pulling it down, creating the impression of greater thickness and body.
Benefits of Regular Trims
Split End Prevention
Split ends occur when the protective outer layer of your hair (the cuticle) becomes damaged, allowing the inner structure to fray and split.
Once a split forms, it can travel up the hair shaft, causing even more damage. Regular trims remove these damaged ends before they can worsen, protecting the integrity of your remaining hair.
Think of it as pruning a plant, you're removing the unhealthy parts to preserve the healthy growth.
Damage Control
Beyond split ends, regular trims help manage overall damage from heat styling, dyes, environmental factors, and everyday wear and tear. The ends of your hair are the oldest part and have been exposed to damaging elements the longest, making them the most vulnerable to breakage and dryness.
Trimming away these compromised sections helps maintain the overall health and appearance of your hair.
Appearance Improvement
Cutting away damaged, frizzy ends creates a smoother, more polished look with better movement and shine. This visual enhancement contributes to the perception that your hair is healthier and thicker, even though the actual thickness of individual strands hasn't changed.
The psychological boost from having hair that looks and feels better shouldn't be underestimated; when your hair looks good, you feel good!
How to Actually Promote Hair Health
1. Proper Nutrition
Your hair needs proper nutrition to grow strong and healthy.
Include plenty of lean meats, fish, eggs, legumes, and dairy in your diet to provide the building blocks for hair growth. Essential fatty acids from sources like salmon, avocados, and nuts help maintain scalp health and hair flexibility.
Iron deficiency is a common cause of hair loss, so include iron-rich foods like spinach and red meat in your diet.
2. Scalp Care
The scalp is the foundation for healthy hair growth. Regular cleansing removes buildup that can clog follicles and impede growth, while gentle massage improves blood circulation to the scalp, delivering more nutrients to the follicles.
3. Gentle Handling
Treating your hair gently prevents damage that leads to breakage. Avoid aggressive brushing, especially when hair is wet and most vulnerable. Use a wide-tooth comb to detangle, starting at the ends and working up gradually.
Additionally, be mindful of how you towel-dry your hair, rubbing vigorously creates friction that damages the cuticle.
4. Protective Styling
Protective styles keep your ends tucked away and minimize exposure to damaging elements. Buns, braids, and twists can be great options as long as they're not installed too tightly. For those with fragile or thinning hair, loose styles that distribute tension evenly are best.
Trybello's Science-Based Approach to Real Hair Growth
At Trybello, we're passionate about debunking hair myths because we believe you deserve solutions based on science, not folklore. This is precisely why we formulated our Bello Hair Helper Spray to work at the source of hair production; your follicles.
Our hair spray contains follicle-loving ingredients that promote thicker hair growth.
Our scientifically-backed trio of active ingredients operates like a targeted nutrition system for your scalp: biotin provides the essential building blocks for keratin synthesis, castor oil has ricinoleic acid that detoxifies and moisturizes the scalp, and caffeine penetrates directly to hair roots to extend the active growth phase and stimulate dormant follicles.
Here’s how you can get the most from our hair spray:
- Apply: Spray 1–2 pumps on thinning areas (no washing needed first)
- Absorb: Massage in and wait 30+ minutes
- Timing: Use overnight (rinse in the morning) or leave in all day
- Frequency: Once daily to maintain, twice daily for faster results
This plant-based formula bypasses the surface-level approach of cutting and delivers real nourishment where growth decisions are made, resulting in measurably thicker, denser hair within 4 weeks, not just the temporary illusion of fullness from a fresh haircut.
Your hair deserves science-backed care that works with your body's natural processes to unlock its true potential. With our 120-day money-back promise, begin your hair growth journey with complete confidence—achieve results or receive a full refund!
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