[thedoc (OP)]

Why does more of my hair fall out when I wash it with shampoo than when I wash with just water? Only a few strands come out when I wash with water, but a whole lot come out when I use soap.
Asked by Rachel


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[chapter podcast=4106 track=12.09.23/Naked_Scientists_Show_12.09.23_10820.mp3]  ...or Listen to the Answer[/chapter] or [download as MP3]

[janesi87]

maybe the shampoo you use doesn't suit to your hair and as i know, washing hair too much can lead to the weaker scalp. You can change your shampoo

[CliffordK]

That is odd.
Is it possible that the hair sticks together more when just washed with water, so you don't find the lost hair in the drain?
The soap and conditioner may allow the hair to separate more, and fall out.  Along, of course, with vigorous washing.