correlational
Analysis v1
Strong Support
A study found that using a certain ingredient for 4 months helped reduce grey hair in men — it made fewer hairs turn grey and lowered the number of grey hairs per patch of scalp.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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The study tested a special ingredient on men with grey hair and found it helped reduce grey hair after 4 months, just like the claim says.
Contradicting (0)
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Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.