Many shampoos contain vitamins.
Elvive Vitamax shampoo for example, is variously promised to contain "Vitamin pro-B5" which
makes hair full of vitality.
Is this additive useful?
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Oddthinking
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I wonder what "full of vitality" means. – Flimzy Feb 12 '15 at 17:53
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What is "Vitamin pro-B5", other than an ingredient? You need only carry out a set of double-blind tests: create some test bottles containing (a) Shampoo with "Vitamin pro-B5" (b) Shampoo without "Vitamin pro-B5", label them A or B, and give them to people to assess, without telling them what each contains. Ask people on a scale of 1 to 10, how much "vitality" they think there hair had before and after shampooing. – iantresman Feb 13 '15 at 11:47
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1I always suggest to people believing in this kind of things to do a half-face or half-hair test. Use the product on half the face or half the hair and a similar product without the additive on the other half and compare. Never have anyone returned with evidence. I take this as marketing BS. – ghellquist Oct 04 '19 at 20:53