Hair loss has many possible causes, from genetics and hormonal changes to stress, illness and nutrient deficiencies, and the right response depends on which of these is behind it. Early, consistent use of a scalp-targeted shampoo and serum can help slow thinning and support thicker-looking hair, but persistent or sudden hair loss is worth discussing with a professional rather than treating with over-the-counter products alone. Below is what causes hair loss, the signs to watch for, and the product ranges that can help support scalp health and hair density.
What Causes Hair Loss?
Hair loss can be traced to a wide range of factors, including genetics, sensitivity to androgens, nutrient deficiencies, illness, physical or emotional trauma, and prolonged stress. Underlying health conditions such as diabetes, circulatory disorders and thyroid imbalances can also contribute. It affects people of all genders and ages, though women often notice increased shedding or thinning around pregnancy, postpartum and menopause due to hormonal shifts.
What Are the Early Signs of Hair Loss?
Hair loss usually shows up gradually rather than all at once, which is why it's often missed early. Common early signs include noticeably more hair in the shower drain or on your pillow, a widening part line, thinning at the crown or temples, and hair that feels finer or less dense than it used to. Catching these signs early gives scalp-focused products and professional treatment the best chance to slow further thinning.
Who Should You Speak to About Hair Loss?
Seeking professional advice is the best first step, since hair loss can have several underlying causes that respond differently to treatment. Hairhouse stylists in every store can offer a free hair health consultation and recommend a suitable in-store product routine. For more persistent or unexplained hair loss, a Trichologist, a specialist in hair and scalp health, can help identify the root cause and recommend medical or lifestyle-based treatment options beyond what over-the-counter products can address.
What Products Help With Hair Loss and Thinning?
Hairhouse stocks several scalp-focused ranges designed to support hair density and reduce the appearance of thinning. The right one often comes down to hair type, scalp sensitivity, and whether you're treating fine hair, colour-treated hair, or looking for a range designed specifically for men.
Redken Acidic Grow Shampoo and Serum use a pH-balanced, bonding acidic formula to strengthen strands from root to tip, helping reduce the breakage that can make thinning hair look worse over time.
Biolage Full Rescue Shampoo and Invigorating Scalp Serum are formulated specifically for visibly thinning hair, combining a fortifying cleanse with a leave-on scalp treatment to help support a healthier-looking scalp environment for hair growth.
Kérastase Genesis Bain Hydra-Fortifiant and Anti-Chute Fortifiant Serum target hair fall caused by weakened, fragile strands, pairing a fortifying shampoo with a daily leave-in serum designed to reduce hair fall from breakage with regular use.
Kérastase Genesis Homme Bain de Masse Épaississant and Serum Fortifiant Anti-Chute are formulated specifically for men's hair and scalp needs, thickening the look of fine hair while helping reduce hair fall caused by breakage.
L'Oréal Professionnel Serioxyl Advanced Denser Hair Shampoo and Serum are designed to refresh and densify thinning hair, using a lightweight gel cleanse and a daily scalp serum together for a fuller-looking result over time.
Expert Tip: Hairhouse stylists recommend committing to a scalp-focused routine for at least 8 to 12 weeks before judging results, since hair growth cycles are slow and most density-focused products need consistent use to show a visible difference.
How Do I Build a Hair-Loss Care Routine?
- Identify possible triggers first, such as recent illness, stress, hormonal changes or a new medication, since this can point you toward the right treatment approach.
- Cleanse with a shampoo from a range suited to your hair type and concern, used consistently rather than switching products every few washes.
- Follow with a leave-in scalp serum daily, applied directly to the scalp rather than the lengths, for the best chance of supporting new growth.
- Be gentle when brushing and styling wet hair, since hair is more fragile when wet and rough handling can add to breakage-related thinning.
- Book a free in-store consultation or see a Trichologist if shedding is heavy, sudden or ongoing, since these cases often need more than an over-the-counter routine.
Frequently Asked Questions
What are the most common causes of hair loss?
The most common causes include genetics, hormonal changes, nutrient deficiencies, stress, illness and certain health conditions such as thyroid imbalances. Hair loss can also be temporary, triggered by pregnancy, significant weight changes or physical trauma, and often improves once the underlying cause is addressed.
Can hair loss be reversed?
It depends on the cause. Hair loss linked to temporary triggers like stress or nutrient deficiency often improves once the trigger is resolved, especially with consistent use of scalp-focused products. Genetic or hormonal hair loss is harder to fully reverse, but its progression can often be slowed with the right routine and professional guidance.
How long does it take to see results from hair-loss products?
Most scalp-focused shampoos and serums need at least 8 to 12 weeks of consistent use before any visible difference, since hair growth cycles are naturally slow. Results also vary by individual and underlying cause, so professional advice can help set realistic expectations.
Should I see a doctor or a hairdresser about hair loss?
Both can help, depending on severity. A Hairhouse stylist can recommend suitable products during a free consultation for general thinning, while a doctor or Trichologist is the better first step for sudden, patchy or unusually heavy hair loss, since these can point to an underlying medical cause.
Addressing hair loss is a journey you don't have to take alone. Hairhouse stylists across our 100+ stores in Australia offer free hair health consultations to help you find the right routine, and if your needs go beyond what over-the-counter products can address, a Trichologist referral can be the right next step.