How long do you have to leave shampoo in your hair?
Md Ariful Islam
বিএসসি(সিএসই)
,
এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
You can rinse shampoo out immediately after applying it. You want to massage it into your scalp thoroughly, but it doesn't need to sit.
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