If you’re taking a GLP-1 medication and have noticed changes in your hair, such as increased shedding, thinner strands or dullness, you’re not alone. These medications, including semaglutide (Ozempic, Wegovy) and liraglutide (Saxenda), have become well known for their role in managing weight and type 2 diabetes. However, one side effect that some people report is hair thinning or excessive hair fall.
At Stonehills Hair, we understand how personal and sometimes emotional these changes can feel. Your hair is often a reflection of your overall health, and when it begins to change, it can be unsettling. The good news is that this type of hair thinning is usually temporary, and with the right support hair often returns to its normal growth cycle.
Here’s how to support your hair if you’re on GLP-1 medication, from strengthening it from the inside out to protecting it during everyday routines.
Strengthen from Within: Why We Recommend Viviscal Pro
Viviscal Pro is a drug-free, clinically backed supplement that promotes healthy hair growth by delivering vital nutrients to the follicles. When hair thinning is triggered by sudden shifts in body weight, nutrition or hormonal balance, all of which may be affected by GLP-1 treatments, internal support is essential.
Viviscal Pro helps to:
- Nourish thinning hair from the follicle
- Support the hair’s natural growth cycle
- Improve strength and resilience over time
“Viviscal Pro is one of our go-to supplements for clients experiencing temporary thinning,” says Adam, Premium Stylist at Stonehills.
“It feeds the follicles from within — we’ve seen fantastic results when used consistently over a few months.”
If your hair fall is nutritional or stress-related, both common side effects of rapid lifestyle changes, Viviscal Pro can offer gentle yet effective support.
Rebuild and Fortify: Kérastase Genesis for Weakened Hair
If you’re noticing increased breakage, scalp sensitivity, or lack of density, the Kérastase Genesis range offers a targeted solution. This professional-strength range focuses on reducing hair fall due to breakage, a common concern when hair becomes more fragile due to nutritional shifts or hormonal changes.
Kérastase Genesis helps to:
- Strengthen hair fibres to resist breakage
- Soothe and re-balance the scalp
- Boost the appearance of density and softness
“Genesis is brilliant for anyone feeling their hair has lost resilience,” explains Emma, Senior Stylist at Stonehills.
“It targets the root cause of breakage while keeping the scalp balanced — a healthy scalp always equals stronger hair.”
The Genesis range includes shampoo, conditioner, daily serums, and heat-protectant styling products, everything you need for a full at-home hair treatment routine.
Protect While You Sleep: The Power of Silk
Hair is at its most vulnerable when it’s dry, fragile, or under stress. One of the easiest ways to prevent overnight breakage and frizz is to switch to a Slip Silk Pillowcase. Unlike cotton, which can cause friction and absorb your hair’s natural oils, silk helps maintain moisture and reduce tangling.
Benefits of a Silk Pillowcase:
- Minimises overnight friction
- Reduces frizz and static
- Preserves shine, softness and hydration
“Small changes like switching to a silk pillowcase can make a noticeable difference,” says the team at Stonehills.
“It’s a simple, long-term investment for anyone wanting to preserve the health of their hair.”
Silk also benefits the skin, reducing creases and dryness, so it’s a win-win for your self-care routine. Shop silk hair scrunchies from Slip also available at Stonehills Hair.

Our Expert Advice: Personalised Hair Support That Works
Every head of hair tells a different story. That’s why we always recommend booking a one-to-one consultation with one of our experienced stylists. If you’re noticing changes in texture, thickness or shedding, we’ll assess your scalp and hair condition and build a personalised routine based on your hair type, lifestyle, and concerns.
Whether you’re:
- Managing hair thinning
- Looking to rebuild strength after breakage
- In need of gentle styling and heat protection
- Or just unsure which products will suit your hair best
…we’re here to help.
Why Are GLP‑1 Medications Causing Hair Loss?
GLP-1 medications don’t directly cause hair loss. Shedding is more commonly linked to rapid weight loss, reduced nutrient intake or metabolic changes. Here are the main reasons:
1. Rapid Weight Loss Can Trigger Telogen Effluvium
GLP‑1 medications often reduce appetite, which can lead to quick, significant weight loss. When this happens, the body can enter a stress response called telogen effluvium, a temporary condition where more hairs than usual shift into the shedding phase of the growth cycle.
This type of hair loss usually shows up 8–12 weeks after the trigger and can last several months.
2. Reduced Nutrient Intake
With smaller meals and changes in appetite, your body may not receive enough of the nutrients needed to support healthy hair growth, particularly protein, iron, zinc, B vitamins, and omega‑3 fatty acids. Hair follicles are incredibly nutrient-demanding, and even small deficiencies can affect their strength and density.
3. Metabolic and Hormonal Shifts
GLP‑1 medications work by regulating blood sugar and affecting hormones linked to hunger, fullness, and digestion. These hormonal shifts, paired with rapid weight change, can disrupt the hair growth cycle. When the cycle is disrupted, shedding increases even if the strands themselves aren’t damaged.
4. Stress on the Body (Even If You Don’t Feel It)
Weight loss, even when wanted and controlled, can still act as a form of internal stress. Your body naturally prioritises vital organ function first, and hair growth is considered non‑essential. When the body is under stress, it temporarily “rests” the follicles, leading to more shedding.
The Good News
This type of hair loss is temporary and reversible. Once nutrition stabilises and your body adjusts, hair usually returns to its normal growth cycle. With the right support, including strengthening products, scalp care, supplements, and protective habits, you can minimise shedding and encourage healthy regrowth.
Supporting Your Hair Through Life’s Changes
Hair thinning during GLP-1 treatment can be temporary, but taking action early gives your hair the best chance to recover its health, volume, and shine. Combining nourishing supplements, restorative treatments, and protective habits can make a visible and lasting difference.
Explore our full range of hair care solutions and tools, or speak to a member of the Stonehills team for expert advice on how to feel confident in your hair again. Taking action early gives your hair the best chance to recover strength, volume and shine.