Free Welcome Kit· tote, scalp massager + claw clip · $70 valueShedding is one of the most-searched GLP-1 side effects. Here’s why it happens and how our 2-step Custom Hair Density Set can support visibly fuller, denser, healthier-looking hair.
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What GLP-1 users themselves report about their hair, and how GLP-1 shedding usually runs its course.
Most people see it 3–4 months after rapid loss begins, and most see it ease within about 6 months once their weight settles.
Weight starts coming off quickly. Nothing visible yet: follicles are quietly shifting into rest.
More hairs in the brush and the drain. It feels sudden; it isn’t. These hairs stopped growing months ago.
Shedding continues while weight keeps dropping, then eases as your weight stabilizes and nutrition catches up.
Short, fine new hairs appear along the hairline and part as the cycle restarts. Density follows over the next year.
The timeline describes your body’s own hair cycle on a GLP-1, not product results. Timelines from the dermatology literature on telogen effluvium (Malkud 2015; Almohanna 2019). Everyone’s cycle differs; sudden, patchy or scarring loss needs a doctor’s diagnosis. 70%: Alharbi + Alkhalifah, Skin Appendage Disord, 2026 (self-report).
Custom Hair Supplements + Scalp Serum: a personalized, 2-step system to promote visibly fuller, denser, healthier-looking hair. Personalized to 85+ factors, from what you eat to where you live.
One month supply. Two daily capsules.
Nurture growth from within. Our plant-based hair supplements are personalized to help you boost hair growth and target your unique scalp needs, all in 2 daily capsules.
1.7 fl oz · 50 mL · leave-on, daily
Healthy hair starts at the scalp. Our lightweight leave-on scalp serum promotes optimal scalp health for hair that looks and feels fuller, denser, and more voluminous. For best results, use daily.
We recommend 3+ months of daily use to see results. Pair Root Source® and Custom Scalp Serum at night for a simple and soothing before-bed ritual. 2 daily capsules + 2 to 3 droppers of serum.
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Dermatologists call it telogen effluvium. It’s the same thing that happens after surgery, childbirth or a crash diet, and it’s usually temporary.
GLP-1s quiet appetite and slow digestion. In one study only 43% of users met protein targets; iron, zinc and vitamin D intake fell below daily guidance. Hair is a low priority for a body that’s conserving.
Johnson et al., Frontiers in Nutrition, 2025
Shedding tracks the pace of loss, not the drug alone: 83% of people who lost 15%+ reported it vs 40% under 5%. The label for tirzepatide says the same: “associated with weight reduction.”
Alharbi 2026 · Zepbound PI
GLP-1 receptors have been found in hair follicles in animal studies, and the half-million-patient cohort saw higher odds even after adjusting for weight. Scientists call this a hypothesis, not a finding.
List et al. 2006 · Kahn + Avram, 2026
We’ll target your goals and concerns with a powerful blend of only the clean, clinically tested ingredients you need.
Every formula is made around your hair, scalp and goals, with your name on the bottle.
A gentle cleanse made for your scalp and strands.
From$14.80with subscription
Softens, smooths + hydrates, without weighing hair down.
From $14.80with subscription
A weekly treatment that restores + strengthens.
From $19.60with subscription
Detangles and protects between washes.
From $13.20with subscription
Defined curls + waves with a soft hold.
From $13.20with subscription
Adds shine and smooths frizz on lengths + ends.
From $19.60with subscription
Refreshes roots between washes.
From $13.20with subscription
A daily leave-in serum for your scalp.
From $22.40with subscription
Daily capsules, personalized to your hair goals.
From $26.40with subscription
Prices on prose.com, Oct 31, 2026. “From” = your first order when you subscribe (60% off; then 15% off every order, free shipping, cancel anytime); one-time purchases are full price.
Give us feedback on your first order and we’ll adjust your next formula, on us. 100% satisfaction guarantee + free returns.
“I have lost les hair than friends that are on tirzepatide like me. I have been steady on the hair supplements.”
“Because this is what my daughter needs from using the Weight loss shot. Your product checked all the boxes. I hope it does what it says to get her back to healthy”
Verbatim answers from Prose’s post-purchase survey, where customers say how likely they are to recommend Prose (0–10). Customers may name a medication in their own words. Root Source® is a dietary supplement, not intended to diagnose, treat, cure or prevent any disease or any side effect of a medication. Individual results may vary.
01ConsultationAbout 30 questions read your hair and scalp: texture, porosity, color history, shedding, how you wash and style, your goals.
Then where you live, because water, humidity and sun change what your hair needs.
You pick your fragrance (or none) and your preferences, vegan and silicone-free included.
About 30 questions on your hair, scalp, routine and goals, plus where you live. You pick your fragrance and preferences, vegan and silicone-free included.
02FormulationAs you answer, our patented personalization technology writes your formula in real time, selecting from 200+ clean, science-backed ingredients, featuring clinically-tested and proven actives, and dosing each one to your goals.
As you answer, our patented technology writes your formula in real time from 200+ clean, science-backed ingredients, dosed to your goals.
03Made to orderNothing is made until you order it. Your formula is then mixed fresh and bottled in Brooklyn and Los Angeles, for one head of hair: yours. No shelf, no batch, no compromise.
Nothing is made until you order it. Then it’s mixed fresh and bottled in Brooklyn and Los Angeles, for one head of hair: yours.
04Results
05Evolves with youTell us how each product is working and Review & Refine® recalibrates your next formula. Not perfect yet? We aim for nothing less: tell us, and we reformulate your next order for free, 100% satisfaction guarantee. It also keeps improving as our lab adds new ingredients and the seasons change.
Tell us how it’s working and Review & Refine® recalibrates your next formula. Not perfect yet? We reformulate for free, 100% satisfaction guarantee.
Often, yes. Many GLP-1 users notice more shedding a few months after their weight loss begins. It’s common and usually temporary, but talk to your doctor, especially if it’s sudden, heavy or patchy.
No. Never change your medication because of your hair. Talk to your prescriber about anything you notice.
We can’t advise on your medication. Root Source® is a drug-free, vegan hair supplement; check with your doctor or pharmacist before starting any supplement.
No. Prose haircare is cosmetic and Root Source® is a dietary supplement. They are not intended to diagnose, treat, cure or prevent any disease, or any side effect of a medication. What we do is support healthy-looking hair while your body changes.
Root Source®: visible results in 90 days. Custom Scalp Serum: in 4 weeks, scalp feels healthier and hair feels stronger.
Yes. Tell the consultation you’re on a GLP-1 and about any changes in your diet, and your formula reflects them. Update your answers any time as things change.
Root Source® Hair Supplements promote hair growth from the inside-out, while Custom Scalp Serum nourishes hair and scalp health from the outside-in. When paired together and used consistently, the benefits compound over time.
Root Source® is a 30-day supply of 2 capsules (60 total); your first order arrives in glass jars with your name on them, then refills come in compostable pouches every 25 days. The Scalp Serum lasts about a month with daily use and ships every 4, 8 or 12 weeks. Your first order ships together.
Yes. Your Density Set is personalized to 85+ factors and works on straight, wavy, curly and coily hair. We test on a full range of hair types, including type 3 and type 4.
Please consult your doctor before taking Root Source® if you are pregnant, nursing, have a health condition or are taking any medication, including a GLP-1.
¹ Based on self-assessment in a 4-week use-test of 97 subjects who used Prose Custom Scalp Serum daily. ² Results of a 3-month in-house study of Prose 2-step hair growth program performed on 69 subjects. Results may vary. ³ Double-blind clinical study vs. placebo related to our proprietary blend performed on 60 subjects during 12 weeks. ⁴ EU: Regulation (EC) No 1223/2009 on cosmetic products, Annex II (prohibited substances, 1,300+ entries). US: FDA prohibited and restricted cosmetic ingredients (21 CFR Part 700 and 250.250). Applies to Prose haircare formulas, including the Custom Scalp Serum; Custom Root Source® Hair Supplements are dietary supplements and are regulated separately.
Sources: KFF Health Tracking Poll (Nov 2025); FDA prescribing information for Wegovy® and Zepbound®; Akiska et al., JAAD International (2026), 547,993 matched pairs; Yu et al., JAAD Reviews (2025), 34 RCTs; Alharbi & Alkhalifah, Skin Appendage Disorders (2026), self-report survey n=152; Johnson et al., Frontiers in Nutrition (2025); Urbina et al., Clinical Obesity (2026); Malkud, J Clin Diagn Res (2015); Almohanna et al., Dermatology and Therapy (2019); American Academy of Dermatology, GLP-1 drugs and side effects (2026). Cited as context about GLP-1 users; not claims about Prose products.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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