The Science of Stacking Your Hair Loss Treatment
One of the biggest misconceptions I hear in consultations is, “What’s the one thing that will regrow my hair?”
I wish it worked that way.
Hair follicles are incredibly complex mini organs. They respond to hormones, inflammation, nutrition, blood supply, oxidative stress, genetics, scalp health, and even the signals produced by surrounding cells. When one of these systems isn’t functioning optimally, hair growth can slow. When several are affected at the same time, the effects become even more noticeable.
This is why, as a trichologist, I rarely recommend relying on a single treatment.
Instead, I like to think of treatment as stacking evidence-based interventions. Each one supports a different part of the hair growth cycle. Individually, they may provide modest improvements. Together, they often produce far better results than any single therapy alone.
Let’s walk through what that looks like.
Step One: Address the Hormonal Signal
For women with female pattern hair loss, genetics and hormones are often driving the process.
The follicles gradually become more sensitive to androgens, particularly dihydrotestosterone (DHT). This doesn’t necessarily mean hormone levels are high, it means the follicles themselves are genetically more responsive to these hormones.
Over time, this causes follicular miniaturisation. Each growth cycle produces a slightly finer, shorter hair until eventually some follicles struggle to produce visible terminal hairs at all.
This is where medications such as spironolactone or bicalutamide may be prescribed.
Rather than directly stimulating new growth, these medications reduce androgen activity at the follicle. The goal is to slow or stabilise the miniaturisation process so the follicle has the opportunity to produce thicker hairs over successive growth cycles.
They’re treating one important piece of the puzzle, the hormonal environment.
Step Two: Improve Cellular Energy with LED Therapy
Hair follicles are among the most metabolically active structures in the body.
Producing hair continuously requires enormous amounts of energy.
Low-Level Light Therapy (LLLT), also known as LED therapy, works differently from medication. Instead of changing hormones, it supports the follicle’s ability to function.
Red light (around 630–660 nm) and near-infrared light (around 810–850 nm) are absorbed by cytochrome c oxidase within the mitochondria. This can increase ATP production, the energy currency that cells use for growth and repair.
Research also suggests LED therapy may:
- Improve microcirculation around the follicle
- Reduce oxidative stress
- Modulate inflammatory pathways
- Prolong the anagen (growth) phase
- Increase hair shaft diameter in some individuals
Think of it as improving the follicle’s energy supply rather than changing its hormones.
Step Three: Create a Healthy Scalp Environment
Healthy hair begins with healthy scalp skin.
The scalp isn’t simply skin with hair growing out of it. It contains a much higher density of terminal hair follicles, larger sebaceous glands, a unique microbiome, and experiences greater mechanical stress than facial skin.
Inflammation doesn’t always appear as redness or itching.
Sometimes it’s occurring at a microscopic level around the follicle. This low-grade perifollicular inflammation has been identified in many people with androgenetic alopecia and may contribute to ongoing follicular damage.
This is why scalp care isn’t simply cosmetic.
A well-formulated scalp routine aims to:
- Support the skin barrier
- Reduce unnecessary inflammation
- Maintain a balanced scalp microbiome
- Remove excess sebum and oxidised oils
- Minimise irritation without stripping the skin
The healthier the scalp environment, the better the follicle can perform.
Step Four: Feed the Follicle
Hair is one of the first tissues the body will down-regulate when nutrients are limited.
From a survival perspective, growing hair simply isn’t essential.
Hair follicles require adequate amounts of:
- Protein for keratin production
- Iron for oxygen transport and DNA synthesis
- Zinc for cell division
- Vitamin D for follicle cycling
- B vitamins for rapidly dividing cells
- Essential fatty acids for healthy cell membranes
- Antioxidants to reduce oxidative stress
It’s also important to consider nutrient absorption, gut health, blood sugar regulation, and overall dietary quality, not just individual supplements.
Correcting a deficiency won’t necessarily reverse genetic hair loss, but deficiencies can absolutely worsen shedding and limit the follicle’s ability to respond to treatment.
Step Five: Lifestyle Still Matters
Stress, poor sleep, smoking, chronic inflammation, insulin resistance, and certain medical conditions all influence hair growth.
Chronically elevated cortisol can alter the hair cycle, while poor sleep affects hormone regulation and tissue repair.
Exercise improves circulation and metabolic health, both of which support healthy follicle function.
Lifestyle isn’t separate from hair health, it’s part of the biological environment the follicle exists within.
Why We Stack Treatments
Imagine trying to grow a garden.
You could buy the best fertiliser available, but if the soil is poor, there’s no sunlight, and the plants aren’t being watered, you’ll never see the results that fertiliser alone is capable of producing.
Hair follicles work in much the same way.
Medication may reduce the hormonal trigger.
LED therapy may improve cellular energy.
Scalp care may reduce inflammation and support the barrier.
Nutrition provides the raw materials needed to build hair.
Lifestyle supports the biological systems that allow everything else to work.
None of these therapies are magic on their own.
But when they’re thoughtfully combined, each one addresses a different biological pathway involved in healthy hair growth.
That’s the approach I take in consultations, not looking for a single miracle treatment, but building a personalised strategy where every piece supports the next.
Because in hair restoration, it’s rarely one intervention that changes everything.
It’s the way the pieces work together.
If you need guidance building a curated routine to your hair and scalp send our clinical certified trichologist an email nicola@halohaircare.co.nz to help set up a plan to see long lasting results.
