Claim type: Hair & lash growth
"Grows hair", "thicker lashes" and similar growth claims, separated into drug evidence, cosmetic evidence and marketing.
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C Plausible, thin evidence
Rosemary oil vs minoxidil: what the one trial really showed, and four ‘hair growth’ bottles graded
‘Rosemary oil works as well as minoxidil’ traces back to a single 100-person trial with no placebo group, against the weaker 2% strength. We…
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C Plausible, thin evidence
Lash serums that ‘work’ and why: the prostaglandin question, the EU safety verdict, and four labels graded
The lash serums with dramatic before-and-afters usually contain a prostaglandin analogue, a cousin of glaucoma drugs. In February 2026 the EU’s scientific safety committee…