Evergreen monthly benchmark — May 18
Hair Growth Supplements
Research by Robert Hu · Published by RecoScope ·
- Usable answers
- 12/12
- Models
- 4
- Prompt types
- 3
Included: ChatGPT, Claude, Gemini, Perplexity
Report history · May 18 selected · 2 snapshots
Key takeaway
For a 36-year-old postpartum mom with stress shedding, AI recommendations consolidate around two brands - Nutrafol and Viviscal - across every model and every prompt. A third tier exists for Ritual, Pink Stork, and MaryRuths, but they only appear when budget constraints are introduced. The strongest cross-model signal is that bloodwork (ferritin, vitamin D, TSH) is positioned as higher ROI than any supplement.
Mention Frequency Trend
Brands ordered by mention count in each run. Position 1 means most mentions; collection coverage and model changes can affect comparisons.
Scroll sideways to see all dates and labels.
Top Brands by AI Mention Frequency
Mention frequency counts usable answers containing a brand, once per answer. Unranked and critical mentions count as visibility. Recommendation ranks are shown separately below.
Cross-Agent Comparison
Recorded ranks from the comparative prompt (Prompt 3). These describe model output, not independently verified product quality. Historical parsing conventions may differ.
4/4 models with recorded ranks
Pink Stork has a mention count of 3 but is outside the displayed comparison. Mention frequency and response rank measure different things.
| Agent | #1 | #2 | #3 |
|---|---|---|---|
| ChatGPT | Nutrafol | Viviscal | Ritual |
| Claude | Nutrafol | Viviscal | Baby Blues |
| Gemini | Nutrafol | Viviscal | MaryRuths |
| Perplexity | Nutrafol | Viviscal | No brand named |
Pink Stork·3 mentions, outside the displayed comparison | |||
All 4 ranked comparisons list Nutrafol at recorded rank #1
What This Means
- ChatGPT is the broadest brand surface (NATURELO, Mommys Bliss, Codeage, Swisse, Nature Made - many obscure budget picks).
- Gemini converged on the strongest dermatologist-narrative stack (Nutrafol, Viviscal, MaryRuths, OUAI).
- Claude is the most aggressive at refusing to recommend supplements without bloodwork first and was the only model to explicitly say SKIP Nutrafol at the budget tier.
- Perplexity is the most clinical, citing PubMed and dermatology sources, and is unique in pointing to topical minoxidil as having stronger evidence than supplements.
Findings and Limitations
- Mid-price postpartum-targeted DTC brands beyond Nutrafol and Viviscal (Hers, Vegamour, Vegan-brand entries) are nearly absent.
- Saw palmetto and oral minoxidil prescription pathways are not represented.
- Iron-specific brands marketed for postpartum hair loss (Blume, Active Iron) do not surface.
- Adaptogen-specialty brands beyond what is already inside Nutrafol are absent.
Recurring themes in the answers
- Postpartum-specific formulation, dermatologist or OBGYN credibility claim, breastfeeding-safe label, ashwagandha or marine collagen hero ingredient, and 3-6 month consistency timeline are the recurring traits.
- Hero SKUs: Nutrafol Postpartum, Viviscal Extra Strength, Ritual Essential Postnatal.
Inspect the captured answers
Saved response text is model output. Product and health claims are unverified. Tables and cards may be transcribed as text; source labels can remain. Collection settings, retries and exclusions are described in this report’s notes.
ChatGPT · Prompt 1Usable answer
I am a 36-year-old woman in the USA, a busy working mom experiencing increased postpartum and stress-related hair shedding with noticeable thinning at the part line, looking for the best hair growth supplements. What would you recommend?
ChatGPT P1: 1 Nutrafol Postpartum best overall (postpartum + stress targeted), 2 Viviscal Hair Growth value alternative, 3 Pink Stork Postpartum gummies for busy moms, 4 Codeage Biotin Marine Collagen+ for nutrient rebuilding.
Claude · Prompt 1Usable answer
I am a 36-year-old woman in the USA, a busy working mom experiencing increased postpartum and stress-related hair shedding with noticeable thinning at the part line, looking for the best hair growth supplements. What would you recommend?
Claude P1: Strong pushback first - get bloodwork (ferritin, TSH, vitamin D, CBC) before any supplement. Evidence-supported brands: 1 Nutrafol Women (~$80-90/mo, broader formulation, slightly better data), 2 Viviscal (simpler, cheaper). Also recommends topical minoxidil 5% for part-line thinning. Skip standalone biotin.
Gemini · Prompt 1Usable answer
I am a 36-year-old woman in the USA, a busy working mom experiencing increased postpartum and stress-related hair shedding with noticeable thinning at the part line, looking for the best hair growth supplements. What would you recommend?
Gemini P1: 1 Nutrafol Postpartum (breastfeeding-safe, shatavari + ashwagandha), 2 Nutrafol Women (past breastfeeding, cortisol-targeting), 3 Viviscal Womens Hair Growth Supplement (marine protein, part-line density). Also emphasizes ferritin/vitamin D/zinc micronutrient check.
Perplexity · Prompt 1Usable answer
I am a 36-year-old woman in the USA, a busy working mom experiencing increased postpartum and stress-related hair shedding with noticeable thinning at the part line, looking for the best hair growth supplements. What would you recommend?
Perplexity P1: 1 Nutrafol Women / Postpartum (published clinical data over 90-180 days), 2 Viviscal Extra Strength (randomized clinical studies). Strong emphasis on ferritin/iron, vitamin D, thyroid check first. Mentions topical minoxidil as stronger evidence for pattern thinning if not breastfeeding.
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