Skin & Hair
Rapid weight loss — including on GLP-1 medications — commonly triggers telogen effluvium, a temporary but distressing form of hair shedding. Tirzepatide labeling explicitly lists hair loss as a reported side effect. The good news: it's almost always temporary. Protein adequacy is the most important factor; collagen peptides offer additional support with moderate evidence.
How we chose these products
Every product in this category is assigned an evidence tier — Strong, Moderate, or Emerging— based on the clinical research behind the key ingredient category. Products labeled “GLP-1 Specifically Labeled” are formulated or marketed directly for GLP-1 medication users.
Our composite score weights evidence tier, Amazon rating, and review volume. Products are sorted by composite score by default. We earn affiliate commissions on purchases, which does not influence our ratings.
What to look for
Adequate protein intake is the single most important factor for hair health on GLP-1 therapy. Hair is made of keratin (a protein), and deficiency is a primary driver of telogen effluvium during rapid weight loss. Before investing in specialized hair supplements, ensure you're hitting 1.2–1.6g/kg of protein daily.
Collagen peptides (hydrolyzed collagen) have moderate evidence for supporting hair thickness and skin elasticity. They're a convenient source of glycine and proline — amino acids important for collagen synthesis that are under-represented in most protein supplements.
Biotin (Vitamin B7) is heavily marketed for hair growth but has limited evidence in people without a biotin deficiency, which is rare. More worthwhile additions are iron (check your levels — deficiency is common in women), zinc, and vitamins D and B12.
Top picks — 8 products
Vital Proteins
Vital Proteins Collagen Peptides Powder Advanced
Also available in larger sizes
Sports Research
Sports Research Collagen Peptides - Hydrolyzed Type 1 & 3 Collagen Powder Protein Supplement for Healthy Skin
Live Conscious
Live Conscious Collagen Peptides Powder - Naturally-Sourced Hydrolyzed Collagen Powder - Hair
Vital Proteins
Vital Proteins Collagen Peptides Powder
Available in multiple sizes (10 oz, 20 oz, 24 oz)
Related reading
Other useful categories for GLP-1 users
Frequently asked questions
Why does Ozempic or Wegovy cause hair loss?
Hair loss on GLP-1 medications is primarily caused by telogen effluvium — a stress response triggered by rapid weight loss. When your body loses weight quickly, hair follicles enter a resting phase early, causing increased shedding 2–4 months after the stressor. It's the weight loss causing the hair loss, not the medication itself. Tirzepatide (Mounjaro/Zepbound) does list hair loss in its labeling.
How long does hair loss last on GLP-1 medications?
Telogen effluvium caused by rapid weight loss is almost always temporary. Most people see peak shedding 2–4 months into weight loss, followed by gradual recovery over 3–6 months. Adequate protein intake significantly speeds up recovery. Very few cases of GLP-1-related hair loss are permanent.
Does collagen help with hair loss on Ozempic?
Collagen peptides have moderate evidence for supporting hair health, primarily through providing glycine and proline that support keratin production. While not as critical as total protein intake, collagen can be a useful addition — particularly because it's easy to add to foods and doesn't compete with other protein sources.
What's the most important supplement for GLP-1 hair loss?
The most important intervention is ensuring adequate total protein intake (1.2–1.6g/kg body weight daily). Beyond that, check your iron and vitamin D levels — both deficiencies are common in GLP-1 users and both are major contributors to hair loss. Targeted supplementation of genuinely deficient nutrients is more effective than generic hair supplement blends.